21125835

素因数分解:

$3^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{73}}^1\times {\mathrm{109}}^1$

素因数の和:252

約数の個数: 48

約数和(自身を含む): 38095200

約数和(自身を除く): 16969365

約数列:

[1, 3, 5, 9, 15, 45, 59, 73, 109, 177, 219, 295, 327, 365, 531, 545, 657, 885, 981, 1095, 1635, 2655, 3285, 4307, 4905, 6431, 7957, 12921, 19293, 21535, 23871, 32155, 38763, 39785, 57879, 64605, 71613, 96465, 119355, 193815, 289395, 358065, 469463, 1408389, 2347315, 4225167, 7041945, 21125835]

約数ペア:

[(1, 21125835), (3, 7041945), (5, 4225167), (9, 2347315), (15, 1408389), (45, 469463), (59, 358065), (73, 289395), (109, 193815), (177, 119355), (219, 96465), (295, 71613), (327, 64605), (365, 57879), (531, 39785), (545, 38763), (657, 32155), (885, 23871), (981, 21535), (1095, 19293), (1635, 12921), (2655, 7957), (3285, 6431), (4307, 4905)]