138412520

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{111623}}^1$

素因数の和:111665

約数の個数: 32

約数和(自身を含む): 321477120

約数和(自身を除く): 183064600

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 111623, 223246, 446492, 558115, 892984, 1116230, 2232460, 3460313, 4464920, 6920626, 13841252, 17301565, 27682504, 34603130, 69206260, 138412520]

約数ペア:

[(1, 138412520), (2, 69206260), (4, 34603130), (5, 27682504), (8, 17301565), (10, 13841252), (20, 6920626), (31, 4464920), (40, 3460313), (62, 2232460), (124, 1116230), (155, 892984), (248, 558115), (310, 446492), (620, 223246), (1240, 111623)]