138571240

素因数分解:

$2^3\times 5^1\times {\mathrm{31}}^1\times {\mathrm{111751}}^1$

素因数の和:111793

約数の個数: 32

約数和(自身を含む): 321845760

約数和(自身を除く): 183274520

約数列:

[1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240, 111751, 223502, 447004, 558755, 894008, 1117510, 2235020, 3464281, 4470040, 6928562, 13857124, 17321405, 27714248, 34642810, 69285620, 138571240]

約数ペア:

[(1, 138571240), (2, 69285620), (4, 34642810), (5, 27714248), (8, 17321405), (10, 13857124), (20, 6928562), (31, 4470040), (40, 3464281), (62, 2235020), (124, 1117510), (155, 894008), (248, 558755), (310, 447004), (620, 223502), (1240, 111751)]