21770470

素因数分解:

$2^1\times 5^1\times {\mathrm{43}}^1\times {\mathrm{197}}^1\times {\mathrm{257}}^1$

素因数の和:504

約数の個数: 32

約数和(自身を含む): 40458528

約数和(自身を除く): 18688058

約数列:

[1, 2, 5, 10, 43, 86, 197, 215, 257, 394, 430, 514, 985, 1285, 1970, 2570, 8471, 11051, 16942, 22102, 42355, 50629, 55255, 84710, 101258, 110510, 253145, 506290, 2177047, 4354094, 10885235, 21770470]

約数ペア:

[(1, 21770470), (2, 10885235), (5, 4354094), (10, 2177047), (43, 506290), (86, 253145), (197, 110510), (215, 101258), (257, 84710), (394, 55255), (430, 50629), (514, 42355), (985, 22102), (1285, 16942), (1970, 11051), (2570, 8471)]