138546440

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{111731}}^1$

素因数の和:111773

約数の個数: 32

約数和(自身を含む): 321788160

約数和(自身を除く): 183241720

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 111731, 223462, 446924, 558655, 893848, 1117310, 2234620, 3463661, 4469240, 6927322, 13854644, 17318305, 27709288, 34636610, 69273220, 138546440]

約数ペア:

[(1, 138546440), (2, 69273220), (4, 34636610), (5, 27709288), (8, 17318305), (10, 13854644), (20, 6927322), (31, 4469240), (40, 3463661), (62, 2234620), (124, 1117310), (155, 893848), (248, 558655), (310, 446924), (620, 223462), (1240, 111731)]