256718280

素因数分解:

$2^3\times 3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{23509}}^1$

素因数の和:23543

約数の個数: 128

約数和(自身を含む): 947923200

約数和(自身を除く): 691204920

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 13, 14, 15, 20, 21, 24, 26, 28, 30, 35, 39, 40, 42, 52, 56, 60, 65, 70, 78, 84, 91, 104, 105, 120, 130, 140, 156, 168, 182, 195, 210, 260, 273, 280, 312, 364, 390, 420, 455, 520, 546, 728, 780, 840, 910, 1092, 1365, 1560, 1820, 2184, 2730, 3640, 5460, 10920, 23509, 47018, 70527, 94036, 117545, 141054, 164563, 188072, 235090, 282108, 305617, 329126, 352635, 470180, 493689, 564216, 611234, 658252, 705270, 822815, 916851, 940360, 987378, 1222468, 1316504, 1410540, 1528085, 1645630, 1833702, 1974756, 2139319, 2444936, 2468445, 2821080, 3056170, 3291260, 3667404, 3949512, 4278638, 4584255, 4936890, 6112340, 6417957, 6582520, 7334808, 8557276, 9168510, 9873780, 10696595, 12224680, 12835914, 17114552, 18337020, 19747560, 21393190, 25671828, 32089785, 36674040, 42786380, 51343656, 64179570, 85572760, 128359140, 256718280]

約数ペア:

[(1, 256718280), (2, 128359140), (3, 85572760), (4, 64179570), (5, 51343656), (6, 42786380), (7, 36674040), (8, 32089785), (10, 25671828), (12, 21393190), (13, 19747560), (14, 18337020), (15, 17114552), (20, 12835914), (21, 12224680), (24, 10696595), (26, 9873780), (28, 9168510), (30, 8557276), (35, 7334808), (39, 6582520), (40, 6417957), (42, 6112340), (52, 4936890), (56, 4584255), (60, 4278638), (65, 3949512), (70, 3667404), (78, 3291260), (84, 3056170), (91, 2821080), (104, 2468445), (105, 2444936), (120, 2139319), (130, 1974756), (140, 1833702), (156, 1645630), (168, 1528085), (182, 1410540), (195, 1316504), (210, 1222468), (260, 987378), (273, 940360), (280, 916851), (312, 822815), (364, 705270), (390, 658252), (420, 611234), (455, 564216), (520, 493689), (546, 470180), (728, 352635), (780, 329126), (840, 305617), (910, 282108), (1092, 235090), (1365, 188072), (1560, 164563), (1820, 141054), (2184, 117545), (2730, 94036), (3640, 70527), (5460, 47018), (10920, 23509)]