21460580

素因数分解:

$2^2\times 5^1\times {\mathrm{29}}^1\times {\mathrm{163}}^1\times {\mathrm{227}}^1$

素因数の和:428

約数の個数: 48

約数和(自身を含む): 47113920

約数和(自身を除く): 25653340

約数列:

[1, 2, 4, 5, 10, 20, 29, 58, 116, 145, 163, 227, 290, 326, 454, 580, 652, 815, 908, 1135, 1630, 2270, 3260, 4540, 4727, 6583, 9454, 13166, 18908, 23635, 26332, 32915, 37001, 47270, 65830, 74002, 94540, 131660, 148004, 185005, 370010, 740020, 1073029, 2146058, 4292116, 5365145, 10730290, 21460580]

約数ペア:

[(1, 21460580), (2, 10730290), (4, 5365145), (5, 4292116), (10, 2146058), (20, 1073029), (29, 740020), (58, 370010), (116, 185005), (145, 148004), (163, 131660), (227, 94540), (290, 74002), (326, 65830), (454, 47270), (580, 37001), (652, 32915), (815, 26332), (908, 23635), (1135, 18908), (1630, 13166), (2270, 9454), (3260, 6583), (4540, 4727)]