20970260

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{149}}^1\times {\mathrm{227}}^1$

素因数の和:416

約数の個数: 48

約数和(自身を含む): 45964800

約数和(自身を除く): 24994540

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 149, 155, 227, 298, 310, 454, 596, 620, 745, 908, 1135, 1490, 2270, 2980, 4540, 4619, 7037, 9238, 14074, 18476, 23095, 28148, 33823, 35185, 46190, 67646, 70370, 92380, 135292, 140740, 169115, 338230, 676460, 1048513, 2097026, 4194052, 5242565, 10485130, 20970260]

約数ペア:

[(1, 20970260), (2, 10485130), (4, 5242565), (5, 4194052), (10, 2097026), (20, 1048513), (31, 676460), (62, 338230), (124, 169115), (149, 140740), (155, 135292), (227, 92380), (298, 70370), (310, 67646), (454, 46190), (596, 35185), (620, 33823), (745, 28148), (908, 23095), (1135, 18476), (1490, 14074), (2270, 9238), (2980, 7037), (4540, 4619)]