20166825

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{107}}^1\times {\mathrm{359}}^1$

素因数の和:486

約数の個数: 48

約数和(自身を含む): 38568960

約数和(自身を除く): 18402135

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 75, 105, 107, 175, 321, 359, 525, 535, 749, 1077, 1605, 1795, 2247, 2513, 2675, 3745, 5385, 7539, 8025, 8975, 11235, 12565, 18725, 26925, 37695, 38413, 56175, 62825, 115239, 188475, 192065, 268891, 576195, 806673, 960325, 1344455, 2880975, 4033365, 6722275, 20166825]

約数ペア:

[(1, 20166825), (3, 6722275), (5, 4033365), (7, 2880975), (15, 1344455), (21, 960325), (25, 806673), (35, 576195), (75, 268891), (105, 192065), (107, 188475), (175, 115239), (321, 62825), (359, 56175), (525, 38413), (535, 37695), (749, 26925), (1077, 18725), (1605, 12565), (1795, 11235), (2247, 8975), (2513, 8025), (2675, 7539), (3745, 5385)]