21779980

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^1\times {\mathrm{35129}}^1$

素因数の和:35169

約数の個数: 24

約数和(自身を含む): 47214720

約数和(自身を除く): 25434740

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 620, 35129, 70258, 140516, 175645, 351290, 702580, 1088999, 2177998, 4355996, 5444995, 10889990, 21779980]

約数ペア:

[(1, 21779980), (2, 10889990), (4, 5444995), (5, 4355996), (10, 2177998), (20, 1088999), (31, 702580), (62, 351290), (124, 175645), (155, 140516), (310, 70258), (620, 35129)]