12771980

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{49123}}^1$

素因数の和:49145

約数の個数: 24

約数和(自身を含む): 28884912

約数和(自身を除く): 16112932

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 49123, 98246, 196492, 245615, 491230, 638599, 982460, 1277198, 2554396, 3192995, 6385990, 12771980]

約数ペア:

[(1, 12771980), (2, 6385990), (4, 3192995), (5, 2554396), (10, 1277198), (13, 982460), (20, 638599), (26, 491230), (52, 245615), (65, 196492), (130, 98246), (260, 49123)]