21795675

素因数分解:

$3^1\times 5^2\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{911}}^1$

素因数の和:964

約数の個数: 48

約数和(自身を含む): 40711680

約数和(自身を除く): 18916005

約数列:

[1, 3, 5, 11, 15, 25, 29, 33, 55, 75, 87, 145, 165, 275, 319, 435, 725, 825, 911, 957, 1595, 2175, 2733, 4555, 4785, 7975, 10021, 13665, 22775, 23925, 26419, 30063, 50105, 68325, 79257, 132095, 150315, 250525, 290609, 396285, 660475, 751575, 871827, 1453045, 1981425, 4359135, 7265225, 21795675]

約数ペア:

[(1, 21795675), (3, 7265225), (5, 4359135), (11, 1981425), (15, 1453045), (25, 871827), (29, 751575), (33, 660475), (55, 396285), (75, 290609), (87, 250525), (145, 150315), (165, 132095), (275, 79257), (319, 68325), (435, 50105), (725, 30063), (825, 26419), (911, 23925), (957, 22775), (1595, 13665), (2175, 10021), (2733, 7975), (4555, 4785)]