21806955

素因数分解:

$3^3\times 5^1\times {\mathrm{163}}^1\times {\mathrm{991}}^1$

素因数の和:1168

約数の個数: 32

約数和(自身を含む): 39045120

約数和(自身を除く): 17238165

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 163, 489, 815, 991, 1467, 2445, 2973, 4401, 4955, 7335, 8919, 14865, 22005, 26757, 44595, 133785, 161533, 484599, 807665, 1453797, 2422995, 4361391, 7268985, 21806955]

約数ペア:

[(1, 21806955), (3, 7268985), (5, 4361391), (9, 2422995), (15, 1453797), (27, 807665), (45, 484599), (135, 161533), (163, 133785), (489, 44595), (815, 26757), (991, 22005), (1467, 14865), (2445, 8919), (2973, 7335), (4401, 4955)]