129035020

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{208121}}^1$

素因数の和:208161

約数の個数: 24

約数和(自身を含む): 279715968

約数和(自身を除く): 150680948

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 208121, 416242, 832484, 1040605, 2081210, 4162420, 6451751, 12903502, 25807004, 32258755, 64517510, 129035020]

約数ペア:

[(1, 129035020), (2, 64517510), (4, 32258755), (5, 25807004), (10, 12903502), (20, 6451751), (31, 4162420), (62, 2081210), (124, 1040605), (155, 832484), (310, 416242), (620, 208121)]