21561360

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{89839}}^1$

素因数の和:89855

約数の個数: 40

約数和(自身を含む): 66840960

約数和(自身を除く): 45279600

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 89839, 179678, 269517, 359356, 449195, 539034, 718712, 898390, 1078068, 1347585, 1437424, 1796780, 2156136, 2695170, 3593560, 4312272, 5390340, 7187120, 10780680, 21561360]

約数ペア:

[(1, 21561360), (2, 10780680), (3, 7187120), (4, 5390340), (5, 4312272), (6, 3593560), (8, 2695170), (10, 2156136), (12, 1796780), (15, 1437424), (16, 1347585), (20, 1078068), (24, 898390), (30, 718712), (40, 539034), (48, 449195), (60, 359356), (80, 269517), (120, 179678), (240, 89839)]