21132940

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^2\times {\mathrm{2927}}^1$

素因数の和:2974

約数の個数: 36

約数和(自身を含む): 46853856

約数和(自身を除く): 25720916

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 190, 361, 380, 722, 1444, 1805, 2927, 3610, 5854, 7220, 11708, 14635, 29270, 55613, 58540, 111226, 222452, 278065, 556130, 1056647, 1112260, 2113294, 4226588, 5283235, 10566470, 21132940]

約数ペア:

[(1, 21132940), (2, 10566470), (4, 5283235), (5, 4226588), (10, 2113294), (19, 1112260), (20, 1056647), (38, 556130), (76, 278065), (95, 222452), (190, 111226), (361, 58540), (380, 55613), (722, 29270), (1444, 14635), (1805, 11708), (2927, 7220), (3610, 5854)]