209406860

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{25981}}^1$

素因数の和:26034

約数の個数: 48

約数和(自身を含む): 488877312

約数和(自身を除く): 279470452

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 31, 52, 62, 65, 124, 130, 155, 260, 310, 403, 620, 806, 1612, 2015, 4030, 8060, 25981, 51962, 103924, 129905, 259810, 337753, 519620, 675506, 805411, 1351012, 1610822, 1688765, 3221644, 3377530, 4027055, 6755060, 8054110, 10470343, 16108220, 20940686, 41881372, 52351715, 104703430, 209406860]

約数ペア:

[(1, 209406860), (2, 104703430), (4, 52351715), (5, 41881372), (10, 20940686), (13, 16108220), (20, 10470343), (26, 8054110), (31, 6755060), (52, 4027055), (62, 3377530), (65, 3221644), (124, 1688765), (130, 1610822), (155, 1351012), (260, 805411), (310, 675506), (403, 519620), (620, 337753), (806, 259810), (1612, 129905), (2015, 103924), (4030, 51962), (8060, 25981)]