25569940

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{1637}}^1$

素因数の和:1728

約数の個数: 48

約数和(自身を含む): 59439744

約数和(自身を除く): 33869804

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 71, 110, 142, 220, 284, 355, 710, 781, 1420, 1562, 1637, 3124, 3274, 3905, 6548, 7810, 8185, 15620, 16370, 18007, 32740, 36014, 72028, 90035, 116227, 180070, 232454, 360140, 464908, 581135, 1162270, 1278497, 2324540, 2556994, 5113988, 6392485, 12784970, 25569940]

約数ペア:

[(1, 25569940), (2, 12784970), (4, 6392485), (5, 5113988), (10, 2556994), (11, 2324540), (20, 1278497), (22, 1162270), (44, 581135), (55, 464908), (71, 360140), (110, 232454), (142, 180070), (220, 116227), (284, 90035), (355, 72028), (710, 36014), (781, 32740), (1420, 18007), (1562, 16370), (1637, 15620), (3124, 8185), (3274, 7810), (3905, 6548)]