21628607

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1$

素因数の和:120

約数の個数: 64

約数和(自身を含む): 32514048

約数和(自身を除く): 10885441

約数列:

[1, 7, 11, 13, 17, 31, 41, 77, 91, 119, 143, 187, 217, 221, 287, 341, 403, 451, 527, 533, 697, 1001, 1271, 1309, 1547, 2387, 2431, 2821, 3157, 3689, 3731, 4433, 4879, 5797, 5863, 6851, 7667, 8897, 9061, 13981, 16523, 17017, 21607, 31031, 40579, 41041, 47957, 53669, 63427, 75361, 97867, 99671, 115661, 151249, 181753, 237677, 280891, 527527, 697697, 1272271, 1663739, 1966237, 3089801, 21628607]

約数ペア:

[(1, 21628607), (7, 3089801), (11, 1966237), (13, 1663739), (17, 1272271), (31, 697697), (41, 527527), (77, 280891), (91, 237677), (119, 181753), (143, 151249), (187, 115661), (217, 99671), (221, 97867), (287, 75361), (341, 63427), (403, 53669), (451, 47957), (527, 41041), (533, 40579), (697, 31031), (1001, 21607), (1271, 17017), (1309, 16523), (1547, 13981), (2387, 9061), (2431, 8897), (2821, 7667), (3157, 6851), (3689, 5863), (3731, 5797), (4433, 4879)]