28168920

素因数分解:

$2^3\times 3^2\times 5^1\times {\mathrm{13}}^2\times {\mathrm{463}}^1$

素因数の和:506

約数の個数: 144

約数和(自身を含む): 99347040

約数和(自身を除く): 71178120

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 13, 15, 18, 20, 24, 26, 30, 36, 39, 40, 45, 52, 60, 65, 72, 78, 90, 104, 117, 120, 130, 156, 169, 180, 195, 234, 260, 312, 338, 360, 390, 463, 468, 507, 520, 585, 676, 780, 845, 926, 936, 1014, 1170, 1352, 1389, 1521, 1560, 1690, 1852, 2028, 2315, 2340, 2535, 2778, 3042, 3380, 3704, 4056, 4167, 4630, 4680, 5070, 5556, 6019, 6084, 6760, 6945, 7605, 8334, 9260, 10140, 11112, 12038, 12168, 13890, 15210, 16668, 18057, 18520, 20280, 20835, 24076, 27780, 30095, 30420, 33336, 36114, 41670, 48152, 54171, 55560, 60190, 60840, 72228, 78247, 83340, 90285, 108342, 120380, 144456, 156494, 166680, 180570, 216684, 234741, 240760, 270855, 312988, 361140, 391235, 433368, 469482, 541710, 625976, 704223, 722280, 782470, 938964, 1083420, 1173705, 1408446, 1564940, 1877928, 2166840, 2347410, 2816892, 3129880, 3521115, 4694820, 5633784, 7042230, 9389640, 14084460, 28168920]

約数ペア:

[(1, 28168920), (2, 14084460), (3, 9389640), (4, 7042230), (5, 5633784), (6, 4694820), (8, 3521115), (9, 3129880), (10, 2816892), (12, 2347410), (13, 2166840), (15, 1877928), (18, 1564940), (20, 1408446), (24, 1173705), (26, 1083420), (30, 938964), (36, 782470), (39, 722280), (40, 704223), (45, 625976), (52, 541710), (60, 469482), (65, 433368), (72, 391235), (78, 361140), (90, 312988), (104, 270855), (117, 240760), (120, 234741), (130, 216684), (156, 180570), (169, 166680), (180, 156494), (195, 144456), (234, 120380), (260, 108342), (312, 90285), (338, 83340), (360, 78247), (390, 72228), (463, 60840), (468, 60190), (507, 55560), (520, 54171), (585, 48152), (676, 41670), (780, 36114), (845, 33336), (926, 30420), (936, 30095), (1014, 27780), (1170, 24076), (1352, 20835), (1389, 20280), (1521, 18520), (1560, 18057), (1690, 16668), (1852, 15210), (2028, 13890), (2315, 12168), (2340, 12038), (2535, 11112), (2778, 10140), (3042, 9260), (3380, 8334), (3704, 7605), (4056, 6945), (4167, 6760), (4630, 6084), (4680, 6019), (5070, 5556)]