20537920

素因数分解:

$2^6\times 5^1\times {\mathrm{13}}^1\times {\mathrm{4937}}^1$

素因数の和:4967

約数の個数: 56

約数和(自身を含む): 52678584

約数和(自身を除く): 32140664

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 32, 40, 52, 64, 65, 80, 104, 130, 160, 208, 260, 320, 416, 520, 832, 1040, 2080, 4160, 4937, 9874, 19748, 24685, 39496, 49370, 64181, 78992, 98740, 128362, 157984, 197480, 256724, 315968, 320905, 394960, 513448, 641810, 789920, 1026896, 1283620, 1579840, 2053792, 2567240, 4107584, 5134480, 10268960, 20537920]

約数ペア:

[(1, 20537920), (2, 10268960), (4, 5134480), (5, 4107584), (8, 2567240), (10, 2053792), (13, 1579840), (16, 1283620), (20, 1026896), (26, 789920), (32, 641810), (40, 513448), (52, 394960), (64, 320905), (65, 315968), (80, 256724), (104, 197480), (130, 157984), (160, 128362), (208, 98740), (260, 78992), (320, 64181), (416, 49370), (520, 39496), (832, 24685), (1040, 19748), (2080, 9874), (4160, 4937)]