21177370

素因数分解:

$2^1\times 5^1\times {\mathrm{61}}^1\times {\mathrm{149}}^1\times {\mathrm{233}}^1$

素因数の和:450

約数の個数: 32

約数和(自身を含む): 39171600

約数和(自身を除く): 17994230

約数列:

[1, 2, 5, 10, 61, 122, 149, 233, 298, 305, 466, 610, 745, 1165, 1490, 2330, 9089, 14213, 18178, 28426, 34717, 45445, 69434, 71065, 90890, 142130, 173585, 347170, 2117737, 4235474, 10588685, 21177370]

約数ペア:

[(1, 21177370), (2, 10588685), (5, 4235474), (10, 2117737), (61, 347170), (122, 173585), (149, 142130), (233, 90890), (298, 71065), (305, 69434), (466, 45445), (610, 34717), (745, 28426), (1165, 18178), (1490, 14213), (2330, 9089)]