20396565

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{73}}^1\times {\mathrm{887}}^1$

素因数の和:978

約数の個数: 48

約数和(自身を含む): 41004288

約数和(自身を除く): 20607723

約数列:

[1, 3, 5, 7, 9, 15, 21, 35, 45, 63, 73, 105, 219, 315, 365, 511, 657, 887, 1095, 1533, 2555, 2661, 3285, 4435, 4599, 6209, 7665, 7983, 13305, 18627, 22995, 31045, 39915, 55881, 64751, 93135, 194253, 279405, 323755, 453257, 582759, 971265, 1359771, 2266285, 2913795, 4079313, 6798855, 20396565]

約数ペア:

[(1, 20396565), (3, 6798855), (5, 4079313), (7, 2913795), (9, 2266285), (15, 1359771), (21, 971265), (35, 582759), (45, 453257), (63, 323755), (73, 279405), (105, 194253), (219, 93135), (315, 64751), (365, 55881), (511, 39915), (657, 31045), (887, 22995), (1095, 18627), (1533, 13305), (2555, 7983), (2661, 7665), (3285, 6209), (4435, 4599)]