39977720

素因数分解:

$2^3\times 5^1\times {\mathrm{73}}^1\times {\mathrm{13691}}^1$

素因数の和:13775

約数の個数: 32

約数和(自身を含む): 91188720

約数和(自身を除く): 51211000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 73, 146, 292, 365, 584, 730, 1460, 2920, 13691, 27382, 54764, 68455, 109528, 136910, 273820, 547640, 999443, 1998886, 3997772, 4997215, 7995544, 9994430, 19988860, 39977720]

約数ペア:

[(1, 39977720), (2, 19988860), (4, 9994430), (5, 7995544), (8, 4997215), (10, 3997772), (20, 1998886), (40, 999443), (73, 547640), (146, 273820), (292, 136910), (365, 109528), (584, 68455), (730, 54764), (1460, 27382), (2920, 13691)]