20931645

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{163}}^1\times {\mathrm{1223}}^1$

素因数の和:1401

約数の個数: 32

約数和(自身を含む): 38541312

約数和(自身を除く): 17609667

約数列:

[1, 3, 5, 7, 15, 21, 35, 105, 163, 489, 815, 1141, 1223, 2445, 3423, 3669, 5705, 6115, 8561, 17115, 18345, 25683, 42805, 128415, 199349, 598047, 996745, 1395443, 2990235, 4186329, 6977215, 20931645]

約数ペア:

[(1, 20931645), (3, 6977215), (5, 4186329), (7, 2990235), (15, 1395443), (21, 996745), (35, 598047), (105, 199349), (163, 128415), (489, 42805), (815, 25683), (1141, 18345), (1223, 17115), (2445, 8561), (3423, 6115), (3669, 5705)]