28540980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{12197}}^1$

素因数の和:12225

約数の個数: 72

約数和(自身を含む): 93241512

約数和(自身を除く): 64700532

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 65, 78, 90, 117, 130, 156, 180, 195, 234, 260, 390, 468, 585, 780, 1170, 2340, 12197, 24394, 36591, 48788, 60985, 73182, 109773, 121970, 146364, 158561, 182955, 219546, 243940, 317122, 365910, 439092, 475683, 548865, 634244, 731820, 792805, 951366, 1097730, 1427049, 1585610, 1902732, 2195460, 2378415, 2854098, 3171220, 4756830, 5708196, 7135245, 9513660, 14270490, 28540980]

約数ペア:

[(1, 28540980), (2, 14270490), (3, 9513660), (4, 7135245), (5, 5708196), (6, 4756830), (9, 3171220), (10, 2854098), (12, 2378415), (13, 2195460), (15, 1902732), (18, 1585610), (20, 1427049), (26, 1097730), (30, 951366), (36, 792805), (39, 731820), (45, 634244), (52, 548865), (60, 475683), (65, 439092), (78, 365910), (90, 317122), (117, 243940), (130, 219546), (156, 182955), (180, 158561), (195, 146364), (234, 121970), (260, 109773), (390, 73182), (468, 60985), (585, 48788), (780, 36591), (1170, 24394), (2340, 12197)]