31648240

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^1\times {\mathrm{30431}}^1$

素因数の和:30457

約数の個数: 40

約数和(自身を含む): 79244928

約数和(自身を除く): 47596688

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 208, 260, 520, 1040, 30431, 60862, 121724, 152155, 243448, 304310, 395603, 486896, 608620, 791206, 1217240, 1582412, 1978015, 2434480, 3164824, 3956030, 6329648, 7912060, 15824120, 31648240]

約数ペア:

[(1, 31648240), (2, 15824120), (4, 7912060), (5, 6329648), (8, 3956030), (10, 3164824), (13, 2434480), (16, 1978015), (20, 1582412), (26, 1217240), (40, 791206), (52, 608620), (65, 486896), (80, 395603), (104, 304310), (130, 243448), (208, 152155), (260, 121724), (520, 60862), (1040, 30431)]