72665420

素因数分解:

$2^2\times 5^1\times {\mathrm{197}}^1\times {\mathrm{18443}}^1$

素因数の和:18649

約数の個数: 24

約数和(自身を含む): 153380304

約数和(自身を除く): 80714884

約数列:

[1, 2, 4, 5, 10, 20, 197, 394, 788, 985, 1970, 3940, 18443, 36886, 73772, 92215, 184430, 368860, 3633271, 7266542, 14533084, 18166355, 36332710, 72665420]

約数ペア:

[(1, 72665420), (2, 36332710), (4, 18166355), (5, 14533084), (10, 7266542), (20, 3633271), (197, 368860), (394, 184430), (788, 92215), (985, 73772), (1970, 36886), (3940, 18443)]