18762460

素因数分解:

$2^2\times 5^1\times {\mathrm{71}}^1\times {\mathrm{73}}^1\times {\mathrm{181}}^1$

素因数の和:334

約数の個数: 48

約数和(自身を含む): 40727232

約数和(自身を除く): 21964772

約数列:

[1, 2, 4, 5, 10, 20, 71, 73, 142, 146, 181, 284, 292, 355, 362, 365, 710, 724, 730, 905, 1420, 1460, 1810, 3620, 5183, 10366, 12851, 13213, 20732, 25702, 25915, 26426, 51404, 51830, 52852, 64255, 66065, 103660, 128510, 132130, 257020, 264260, 938123, 1876246, 3752492, 4690615, 9381230, 18762460]

約数ペア:

[(1, 18762460), (2, 9381230), (4, 4690615), (5, 3752492), (10, 1876246), (20, 938123), (71, 264260), (73, 257020), (142, 132130), (146, 128510), (181, 103660), (284, 66065), (292, 64255), (355, 52852), (362, 51830), (365, 51404), (710, 26426), (724, 25915), (730, 25702), (905, 20732), (1420, 13213), (1460, 12851), (1810, 10366), (3620, 5183)]