257615280

素因数分解:

$2^4\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1619}}^1$

素因数の和:1668

約数の個数: 240

約数和(自身を含む): 987124320

約数和(自身を除く): 729509040

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 16, 17, 18, 20, 24, 26, 30, 34, 36, 39, 40, 45, 48, 51, 52, 60, 65, 68, 72, 78, 80, 85, 90, 102, 104, 117, 120, 130, 136, 144, 153, 156, 170, 180, 195, 204, 208, 221, 234, 240, 255, 260, 272, 306, 312, 340, 360, 390, 408, 442, 468, 510, 520, 585, 612, 624, 663, 680, 720, 765, 780, 816, 884, 936, 1020, 1040, 1105, 1170, 1224, 1326, 1360, 1530, 1560, 1619, 1768, 1872, 1989, 2040, 2210, 2340, 2448, 2652, 3060, 3120, 3238, 3315, 3536, 3978, 4080, 4420, 4680, 4857, 5304, 6120, 6476, 6630, 7956, 8095, 8840, 9360, 9714, 9945, 10608, 12240, 12952, 13260, 14571, 15912, 16190, 17680, 19428, 19890, 21047, 24285, 25904, 26520, 27523, 29142, 31824, 32380, 38856, 39780, 42094, 48570, 53040, 55046, 58284, 63141, 64760, 72855, 77712, 79560, 82569, 84188, 97140, 105235, 110092, 116568, 126282, 129520, 137615, 145710, 159120, 165138, 168376, 189423, 194280, 210470, 220184, 233136, 247707, 252564, 275230, 291420, 315705, 330276, 336752, 357799, 378846, 388560, 412845, 420940, 440368, 495414, 505128, 550460, 582840, 631410, 660552, 715598, 757692, 825690, 841880, 947115, 990828, 1010256, 1073397, 1100920, 1165680, 1238535, 1262820, 1321104, 1431196, 1515384, 1651380, 1683760, 1788995, 1894230, 1981656, 2146794, 2201840, 2477070, 2525640, 2862392, 3030768, 3220191, 3302760, 3577990, 3788460, 3963312, 4293588, 4954140, 5051280, 5366985, 5724784, 6440382, 6605520, 7155980, 7576920, 8587176, 9908280, 10733970, 12880764, 14311960, 15153840, 16100955, 17174352, 19816560, 21467940, 25761528, 28623920, 32201910, 42935880, 51523056, 64403820, 85871760, 128807640, 257615280]

約数ペア:

[(1, 257615280), (2, 128807640), (3, 85871760), (4, 64403820), (5, 51523056), (6, 42935880), (8, 32201910), (9, 28623920), (10, 25761528), (12, 21467940), (13, 19816560), (15, 17174352), (16, 16100955), (17, 15153840), (18, 14311960), (20, 12880764), (24, 10733970), (26, 9908280), (30, 8587176), (34, 7576920), (36, 7155980), (39, 6605520), (40, 6440382), (45, 5724784), (48, 5366985), (51, 5051280), (52, 4954140), (60, 4293588), (65, 3963312), (68, 3788460), (72, 3577990), (78, 3302760), (80, 3220191), (85, 3030768), (90, 2862392), (102, 2525640), (104, 2477070), (117, 2201840), (120, 2146794), (130, 1981656), (136, 1894230), (144, 1788995), (153, 1683760), (156, 1651380), (170, 1515384), (180, 1431196), (195, 1321104), (204, 1262820), (208, 1238535), (221, 1165680), (234, 1100920), (240, 1073397), (255, 1010256), (260, 990828), (272, 947115), (306, 841880), (312, 825690), (340, 757692), (360, 715598), (390, 660552), (408, 631410), (442, 582840), (468, 550460), (510, 505128), (520, 495414), (585, 440368), (612, 420940), (624, 412845), (663, 388560), (680, 378846), (720, 357799), (765, 336752), (780, 330276), (816, 315705), (884, 291420), (936, 275230), (1020, 252564), (1040, 247707), (1105, 233136), (1170, 220184), (1224, 210470), (1326, 194280), (1360, 189423), (1530, 168376), (1560, 165138), (1619, 159120), (1768, 145710), (1872, 137615), (1989, 129520), (2040, 126282), (2210, 116568), (2340, 110092), (2448, 105235), (2652, 97140), (3060, 84188), (3120, 82569), (3238, 79560), (3315, 77712), (3536, 72855), (3978, 64760), (4080, 63141), (4420, 58284), (4680, 55046), (4857, 53040), (5304, 48570), (6120, 42094), (6476, 39780), (6630, 38856), (7956, 32380), (8095, 31824), (8840, 29142), (9360, 27523), (9714, 26520), (9945, 25904), (10608, 24285), (12240, 21047), (12952, 19890), (13260, 19428), (14571, 17680), (15912, 16190)]