20426380

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{251}}^1\times {\mathrm{313}}^1$

素因数の和:586

約数の個数: 48

約数和(自身を含む): 46527264

約数和(自身を除く): 26100884

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 251, 260, 313, 502, 626, 1004, 1252, 1255, 1565, 2510, 3130, 3263, 4069, 5020, 6260, 6526, 8138, 13052, 16276, 16315, 20345, 32630, 40690, 65260, 78563, 81380, 157126, 314252, 392815, 785630, 1021319, 1571260, 2042638, 4085276, 5106595, 10213190, 20426380]

約数ペア:

[(1, 20426380), (2, 10213190), (4, 5106595), (5, 4085276), (10, 2042638), (13, 1571260), (20, 1021319), (26, 785630), (52, 392815), (65, 314252), (130, 157126), (251, 81380), (260, 78563), (313, 65260), (502, 40690), (626, 32630), (1004, 20345), (1252, 16315), (1255, 16276), (1565, 13052), (2510, 8138), (3130, 6526), (3263, 6260), (4069, 5020)]