20665575

素因数分解:

$3^2\times 5^2\times 7^1\times {\mathrm{13121}}^1$

素因数の和:13144

約数の個数: 36

約数和(自身を含む): 42305328

約数和(自身を除く): 21639753

約数列:

[1, 3, 5, 7, 9, 15, 21, 25, 35, 45, 63, 75, 105, 175, 225, 315, 525, 1575, 13121, 39363, 65605, 91847, 118089, 196815, 275541, 328025, 459235, 590445, 826623, 984075, 1377705, 2296175, 2952225, 4133115, 6888525, 20665575]

約数ペア:

[(1, 20665575), (3, 6888525), (5, 4133115), (7, 2952225), (9, 2296175), (15, 1377705), (21, 984075), (25, 826623), (35, 590445), (45, 459235), (63, 328025), (75, 275541), (105, 196815), (175, 118089), (225, 91847), (315, 65605), (525, 39363), (1575, 13121)]