21551860

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{163}}^1\times {\mathrm{601}}^1$

素因数の和:784

約数の個数: 48

約数和(自身を含む): 49758912

約数和(自身を除く): 28207052

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 163, 220, 326, 601, 652, 815, 1202, 1630, 1793, 2404, 3005, 3260, 3586, 6010, 6611, 7172, 8965, 12020, 13222, 17930, 26444, 33055, 35860, 66110, 97963, 132220, 195926, 391852, 489815, 979630, 1077593, 1959260, 2155186, 4310372, 5387965, 10775930, 21551860]

約数ペア:

[(1, 21551860), (2, 10775930), (4, 5387965), (5, 4310372), (10, 2155186), (11, 1959260), (20, 1077593), (22, 979630), (44, 489815), (55, 391852), (110, 195926), (163, 132220), (220, 97963), (326, 66110), (601, 35860), (652, 33055), (815, 26444), (1202, 17930), (1630, 13222), (1793, 12020), (2404, 8965), (3005, 7172), (3260, 6611), (3586, 6010)]