821423980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{3159323}}^1$

素因数の和:3159345

約数の個数: 24

約数和(自身を含む): 1857682512

約数和(自身を除く): 1036258532

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 3159323, 6318646, 12637292, 15796615, 31593230, 41071199, 63186460, 82142398, 164284796, 205355995, 410711990, 821423980]

約数ペア:

[(1, 821423980), (2, 410711990), (4, 205355995), (5, 164284796), (10, 82142398), (13, 63186460), (20, 41071199), (26, 31593230), (52, 15796615), (65, 12637292), (130, 6318646), (260, 3159323)]