30789940

素因数分解:

$2^2\times 5^1\times {\mathrm{73}}^1\times {\mathrm{21089}}^1$

素因数の和:21171

約数の個数: 24

約数和(自身を含む): 65547720

約数和(自身を除く): 34757780

約数列:

[1, 2, 4, 5, 10, 20, 73, 146, 292, 365, 730, 1460, 21089, 42178, 84356, 105445, 210890, 421780, 1539497, 3078994, 6157988, 7697485, 15394970, 30789940]

約数ペア:

[(1, 30789940), (2, 15394970), (4, 7697485), (5, 6157988), (10, 3078994), (20, 1539497), (73, 421780), (146, 210890), (292, 105445), (365, 84356), (730, 42178), (1460, 21089)]