13251640

素因数分解:

$2^3\times 5^1\times {\mathrm{61}}^1\times {\mathrm{5431}}^1$

素因数の和:5503

約数の個数: 32

約数和(自身を含む): 30310560

約数和(自身を除く): 17058920

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 61, 122, 244, 305, 488, 610, 1220, 2440, 5431, 10862, 21724, 27155, 43448, 54310, 108620, 217240, 331291, 662582, 1325164, 1656455, 2650328, 3312910, 6625820, 13251640]

約数ペア:

[(1, 13251640), (2, 6625820), (4, 3312910), (5, 2650328), (8, 1656455), (10, 1325164), (20, 662582), (40, 331291), (61, 217240), (122, 108620), (244, 54310), (305, 43448), (488, 27155), (610, 21724), (1220, 10862), (2440, 5431)]