28918780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{131449}}^1$

素因数の和:131469

約数の個数: 24

約数和(自身を含む): 66250800

約数和(自身を除く): 37332020

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 131449, 262898, 525796, 657245, 1314490, 1445939, 2628980, 2891878, 5783756, 7229695, 14459390, 28918780]

約数ペア:

[(1, 28918780), (2, 14459390), (4, 7229695), (5, 5783756), (10, 2891878), (11, 2628980), (20, 1445939), (22, 1314490), (44, 657245), (55, 525796), (110, 262898), (220, 131449)]