20861240

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{27449}}^1$

素因数の和:27479

約数の個数: 32

約数和(自身を含む): 49410000

約数和(自身を除く): 28548760

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 76, 95, 152, 190, 380, 760, 27449, 54898, 109796, 137245, 219592, 274490, 521531, 548980, 1043062, 1097960, 2086124, 2607655, 4172248, 5215310, 10430620, 20861240]

約数ペア:

[(1, 20861240), (2, 10430620), (4, 5215310), (5, 4172248), (8, 2607655), (10, 2086124), (19, 1097960), (20, 1043062), (38, 548980), (40, 521531), (76, 274490), (95, 219592), (152, 137245), (190, 109796), (380, 54898), (760, 27449)]