87700520

素因数分解:

$2^3\times 5^1\times {\mathrm{163}}^1\times {\mathrm{13451}}^1$

素因数の和:13625

約数の個数: 32

約数和(自身を含む): 198551520

約数和(自身を除く): 110851000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 163, 326, 652, 815, 1304, 1630, 3260, 6520, 13451, 26902, 53804, 67255, 107608, 134510, 269020, 538040, 2192513, 4385026, 8770052, 10962565, 17540104, 21925130, 43850260, 87700520]

約数ペア:

[(1, 87700520), (2, 43850260), (4, 21925130), (5, 17540104), (8, 10962565), (10, 8770052), (20, 4385026), (40, 2192513), (163, 538040), (326, 269020), (652, 134510), (815, 107608), (1304, 67255), (1630, 53804), (3260, 26902), (6520, 13451)]