20747805

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{1033}}^1$

素因数の和:1157

約数の個数: 32

約数和(自身を含む): 36132096

約数和(自身を除く): 15384291

約数列:

[1, 3, 5, 13, 15, 39, 65, 103, 195, 309, 515, 1033, 1339, 1545, 3099, 4017, 5165, 6695, 13429, 15495, 20085, 40287, 67145, 106399, 201435, 319197, 531995, 1383187, 1595985, 4149561, 6915935, 20747805]

約数ペア:

[(1, 20747805), (3, 6915935), (5, 4149561), (13, 1595985), (15, 1383187), (39, 531995), (65, 319197), (103, 201435), (195, 106399), (309, 67145), (515, 40287), (1033, 20085), (1339, 15495), (1545, 13429), (3099, 6695), (4017, 5165)]