1226420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{89}}^1$

素因数の和:164

約数の個数: 48

約数和(自身を含む): 2857680

約数和(自身を除く): 1631260

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 53, 65, 89, 106, 130, 178, 212, 260, 265, 356, 445, 530, 689, 890, 1060, 1157, 1378, 1780, 2314, 2756, 3445, 4628, 4717, 5785, 6890, 9434, 11570, 13780, 18868, 23140, 23585, 47170, 61321, 94340, 122642, 245284, 306605, 613210, 1226420]

約数ペア:

[(1, 1226420), (2, 613210), (4, 306605), (5, 245284), (10, 122642), (13, 94340), (20, 61321), (26, 47170), (52, 23585), (53, 23140), (65, 18868), (89, 13780), (106, 11570), (130, 9434), (178, 6890), (212, 5785), (260, 4717), (265, 4628), (356, 3445), (445, 2756), (530, 2314), (689, 1780), (890, 1378), (1060, 1157)]