20734415

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{163}}^1$

素因数の和:303

約数の個数: 32

約数和(自身を含む): 28654080

約数和(自身を除く): 7919665

約数列:

[1, 5, 13, 19, 65, 95, 103, 163, 247, 515, 815, 1235, 1339, 1957, 2119, 3097, 6695, 9785, 10595, 15485, 16789, 25441, 40261, 83945, 127205, 201305, 218257, 318991, 1091285, 1594955, 4146883, 20734415]

約数ペア:

[(1, 20734415), (5, 4146883), (13, 1594955), (19, 1091285), (65, 318991), (95, 218257), (103, 201305), (163, 127205), (247, 83945), (515, 40261), (815, 25441), (1235, 16789), (1339, 15485), (1957, 10595), (2119, 9785), (3097, 6695)]