20389875

素因数分解:

$3^1\times 5^3\times {\mathrm{11}}^1\times {\mathrm{4943}}^1$

素因数の和:4972

約数の個数: 32

約数和(自身を含む): 37020672

約数和(自身を除く): 16630797

約数列:

[1, 3, 5, 11, 15, 25, 33, 55, 75, 125, 165, 275, 375, 825, 1375, 4125, 4943, 14829, 24715, 54373, 74145, 123575, 163119, 271865, 370725, 617875, 815595, 1359325, 1853625, 4077975, 6796625, 20389875]

約数ペア:

[(1, 20389875), (3, 6796625), (5, 4077975), (11, 1853625), (15, 1359325), (25, 815595), (33, 617875), (55, 370725), (75, 271865), (125, 163119), (165, 123575), (275, 74145), (375, 54373), (825, 24715), (1375, 14829), (4125, 4943)]