20921972060

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{8645443}}^1$

素因数の和:8645474

約数の個数: 36

約数和(自身を含む): 48293450184

約数和(自身を除く): 27371478124

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1210, 2420, 8645443, 17290886, 34581772, 43227215, 86454430, 95099873, 172908860, 190199746, 380399492, 475499365, 950998730, 1046098603, 1901997460, 2092197206, 4184394412, 5230493015, 10460986030, 20921972060]

約数ペア:

[(1, 20921972060), (2, 10460986030), (4, 5230493015), (5, 4184394412), (10, 2092197206), (11, 1901997460), (20, 1046098603), (22, 950998730), (44, 475499365), (55, 380399492), (110, 190199746), (121, 172908860), (220, 95099873), (242, 86454430), (484, 43227215), (605, 34581772), (1210, 17290886), (2420, 8645443)]