21314265

素因数分解:

$3^1\times 5^1\times 7^2\times {\mathrm{47}}^1\times {\mathrm{617}}^1$

素因数の和:686

約数の個数: 48

約数和(自身を含む): 40580352

約数和(自身を除く): 19266087

約数列:

[1, 3, 5, 7, 15, 21, 35, 47, 49, 105, 141, 147, 235, 245, 329, 617, 705, 735, 987, 1645, 1851, 2303, 3085, 4319, 4935, 6909, 9255, 11515, 12957, 21595, 28999, 30233, 34545, 64785, 86997, 90699, 144995, 151165, 202993, 434985, 453495, 608979, 1014965, 1420951, 3044895, 4262853, 7104755, 21314265]

約数ペア:

[(1, 21314265), (3, 7104755), (5, 4262853), (7, 3044895), (15, 1420951), (21, 1014965), (35, 608979), (47, 453495), (49, 434985), (105, 202993), (141, 151165), (147, 144995), (235, 90699), (245, 86997), (329, 64785), (617, 34545), (705, 30233), (735, 28999), (987, 21595), (1645, 12957), (1851, 11515), (2303, 9255), (3085, 6909), (4319, 4935)]