21000359560

素因数分解:

$2^3\times 5^1\times {\mathrm{307}}^1\times {\mathrm{1117}}^1\times {\mathrm{1531}}^1$

素因数の和:2966

約数の個数: 64

約数和(自身を含む): 47478150720

約数和(自身を除く): 26477791160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 307, 614, 1117, 1228, 1531, 1535, 2234, 2456, 3062, 3070, 4468, 5585, 6124, 6140, 7655, 8936, 11170, 12248, 12280, 15310, 22340, 30620, 44680, 61240, 342919, 470017, 685838, 940034, 1371676, 1710127, 1714595, 1880068, 2350085, 2743352, 3420254, 3429190, 3760136, 4700170, 6840508, 6858380, 8550635, 9400340, 13681016, 13716760, 17101270, 18800680, 34202540, 68405080, 525008989, 1050017978, 2100035956, 2625044945, 4200071912, 5250089890, 10500179780, 21000359560]

約数ペア:

[(1, 21000359560), (2, 10500179780), (4, 5250089890), (5, 4200071912), (8, 2625044945), (10, 2100035956), (20, 1050017978), (40, 525008989), (307, 68405080), (614, 34202540), (1117, 18800680), (1228, 17101270), (1531, 13716760), (1535, 13681016), (2234, 9400340), (2456, 8550635), (3062, 6858380), (3070, 6840508), (4468, 4700170), (5585, 3760136), (6124, 3429190), (6140, 3420254), (7655, 2743352), (8936, 2350085), (11170, 1880068), (12248, 1714595), (12280, 1710127), (15310, 1371676), (22340, 940034), (30620, 685838), (44680, 470017), (61240, 342919)]