205940440

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{166081}}^1$

素因数の和:166123

約数の個数: 32

約数和(自身を含む): 478316160

約数和(自身を除く): 272375720

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 166081, 332162, 664324, 830405, 1328648, 1660810, 3321620, 5148511, 6643240, 10297022, 20594044, 25742555, 41188088, 51485110, 102970220, 205940440]

約数ペア:

[(1, 205940440), (2, 102970220), (4, 51485110), (5, 41188088), (8, 25742555), (10, 20594044), (20, 10297022), (31, 6643240), (40, 5148511), (62, 3321620), (124, 1660810), (155, 1328648), (248, 830405), (310, 664324), (620, 332162), (1240, 166081)]