821006680

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{1578859}}^1$

素因数の和:1578883

約数の個数: 32

約数和(自身を含む): 1989363600

約数和(自身を除く): 1168356920

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 520, 1578859, 3157718, 6315436, 7894295, 12630872, 15788590, 20525167, 31577180, 41050334, 63154360, 82100668, 102625835, 164201336, 205251670, 410503340, 821006680]

約数ペア:

[(1, 821006680), (2, 410503340), (4, 205251670), (5, 164201336), (8, 102625835), (10, 82100668), (13, 63154360), (20, 41050334), (26, 31577180), (40, 20525167), (52, 15788590), (65, 12630872), (104, 7894295), (130, 6315436), (260, 3157718), (520, 1578859)]