21160940

素因数分解:

$2^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{79}}^1\times {\mathrm{227}}^1$

素因数の和:374

約数の個数: 48

約数和(自身を含む): 45964800

約数和(自身を除く): 24803860

約数列:

[1, 2, 4, 5, 10, 20, 59, 79, 118, 158, 227, 236, 295, 316, 395, 454, 590, 790, 908, 1135, 1180, 1580, 2270, 4540, 4661, 9322, 13393, 17933, 18644, 23305, 26786, 35866, 46610, 53572, 66965, 71732, 89665, 93220, 133930, 179330, 267860, 358660, 1058047, 2116094, 4232188, 5290235, 10580470, 21160940]

約数ペア:

[(1, 21160940), (2, 10580470), (4, 5290235), (5, 4232188), (10, 2116094), (20, 1058047), (59, 358660), (79, 267860), (118, 179330), (158, 133930), (227, 93220), (236, 89665), (295, 71732), (316, 66965), (395, 53572), (454, 46610), (590, 35866), (790, 26786), (908, 23305), (1135, 18644), (1180, 17933), (1580, 13393), (2270, 9322), (4540, 4661)]