72781886

素因数分解:

$2^1\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{89}}^1\times {\mathrm{257}}^1$

素因数の和:428

約数の個数: 32

約数和(自身を含む): 116471520

約数和(自身を除く): 43689634

約数列:

[1, 2, 37, 43, 74, 86, 89, 178, 257, 514, 1591, 3182, 3293, 3827, 6586, 7654, 9509, 11051, 19018, 22102, 22873, 45746, 141599, 283198, 408887, 817774, 846301, 983539, 1692602, 1967078, 36390943, 72781886]

約数ペア:

[(1, 72781886), (2, 36390943), (37, 1967078), (43, 1692602), (74, 983539), (86, 846301), (89, 817774), (178, 408887), (257, 283198), (514, 141599), (1591, 45746), (3182, 22873), (3293, 22102), (3827, 19018), (6586, 11051), (7654, 9509)]