390377720

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{133691}}^1$

素因数の和:133775

約数の個数: 32

約数和(自身を含む): 890388720

約数和(自身を除く): 500011000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 133691, 267382, 534764, 668455, 1069528, 1336910, 2673820, 5347640, 9759443, 19518886, 39037772, 48797215, 78075544, 97594430, 195188860, 390377720]

約数ペア:

[(1, 390377720), (2, 195188860), (4, 97594430), (5, 78075544), (8, 48797215), (10, 39037772), (20, 19518886), (40, 9759443), (73, 5347640), (146, 2673820), (292, 1336910), (365, 1069528), (584, 668455), (730, 534764), (1460, 267382), (2920, 133691)]