21557095

素因数分解:

$5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{61}}^1\times {\mathrm{439}}^1$

素因数の和:535

約数の個数: 32

約数和(自身を含む): 31426560

約数和(自身を除く): 9869465

約数列:

[1, 5, 7, 23, 35, 61, 115, 161, 305, 427, 439, 805, 1403, 2135, 2195, 3073, 7015, 9821, 10097, 15365, 26779, 49105, 50485, 70679, 133895, 187453, 353395, 615917, 937265, 3079585, 4311419, 21557095]

約数ペア:

[(1, 21557095), (5, 4311419), (7, 3079585), (23, 937265), (35, 615917), (61, 353395), (115, 187453), (161, 133895), (305, 70679), (427, 50485), (439, 49105), (805, 26779), (1403, 15365), (2135, 10097), (2195, 9821), (3073, 7015)]