21552895

素因数分解:

$5^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{67}}^1\times {\mathrm{101}}^1$

素因数の和:200

約数の個数: 48

約数和(自身を含む): 33209568

約数和(自身を除く): 11656673

約数列:

[1, 5, 7, 13, 35, 49, 65, 67, 91, 101, 245, 335, 455, 469, 505, 637, 707, 871, 1313, 2345, 3185, 3283, 3535, 4355, 4949, 6097, 6565, 6767, 9191, 16415, 24745, 30485, 33835, 42679, 45955, 47369, 64337, 87971, 213395, 236845, 321685, 331583, 439855, 615797, 1657915, 3078985, 4310579, 21552895]

約数ペア:

[(1, 21552895), (5, 4310579), (7, 3078985), (13, 1657915), (35, 615797), (49, 439855), (65, 331583), (67, 321685), (91, 236845), (101, 213395), (245, 87971), (335, 64337), (455, 47369), (469, 45955), (505, 42679), (637, 33835), (707, 30485), (871, 24745), (1313, 16415), (2345, 9191), (3185, 6767), (3283, 6565), (3535, 6097), (4355, 4949)]