172489580

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{278209}}^1$

素因数の和:278249

約数の個数: 24

約数和(自身を含む): 373914240

約数和(自身を除く): 201424660

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 278209, 556418, 1112836, 1391045, 2782090, 5564180, 8624479, 17248958, 34497916, 43122395, 86244790, 172489580]

約数ペア:

[(1, 172489580), (2, 86244790), (4, 43122395), (5, 34497916), (10, 17248958), (20, 8624479), (31, 5564180), (62, 2782090), (124, 1391045), (155, 1112836), (310, 556418), (620, 278209)]