20725881360

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{97}}^1\times {\mathrm{890287}}^1$

素因数の和:890400

約数の個数: 80

約数和(自身を含む): 64912678656

約数和(自身を除く): 44186797296

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 97, 120, 194, 240, 291, 388, 485, 582, 776, 970, 1164, 1455, 1552, 1940, 2328, 2910, 3880, 4656, 5820, 7760, 11640, 23280, 890287, 1780574, 2670861, 3561148, 4451435, 5341722, 7122296, 8902870, 10683444, 13354305, 14244592, 17805740, 21366888, 26708610, 35611480, 42733776, 53417220, 71222960, 86357839, 106834440, 172715678, 213668880, 259073517, 345431356, 431789195, 518147034, 690862712, 863578390, 1036294068, 1295367585, 1381725424, 1727156780, 2072588136, 2590735170, 3454313560, 4145176272, 5181470340, 6908627120, 10362940680, 20725881360]

約数ペア:

[(1, 20725881360), (2, 10362940680), (3, 6908627120), (4, 5181470340), (5, 4145176272), (6, 3454313560), (8, 2590735170), (10, 2072588136), (12, 1727156780), (15, 1381725424), (16, 1295367585), (20, 1036294068), (24, 863578390), (30, 690862712), (40, 518147034), (48, 431789195), (60, 345431356), (80, 259073517), (97, 213668880), (120, 172715678), (194, 106834440), (240, 86357839), (291, 71222960), (388, 53417220), (485, 42733776), (582, 35611480), (776, 26708610), (970, 21366888), (1164, 17805740), (1455, 14244592), (1552, 13354305), (1940, 10683444), (2328, 8902870), (2910, 7122296), (3880, 5341722), (4656, 4451435), (5820, 3561148), (7760, 2670861), (11640, 1780574), (23280, 890287)]