81552020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{227}}^1$

素因数の和:341

約数の個数: 96

約数和(自身を含む): 198567936

約数和(自身を除く): 117015916

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 23, 44, 46, 55, 71, 92, 110, 115, 142, 220, 227, 230, 253, 284, 355, 454, 460, 506, 710, 781, 908, 1012, 1135, 1265, 1420, 1562, 1633, 2270, 2497, 2530, 3124, 3266, 3905, 4540, 4994, 5060, 5221, 6532, 7810, 8165, 9988, 10442, 12485, 15620, 16117, 16330, 17963, 20884, 24970, 26105, 32234, 32660, 35926, 49940, 52210, 57431, 64468, 71852, 80585, 89815, 104420, 114862, 161170, 177287, 179630, 229724, 287155, 322340, 354574, 359260, 370691, 574310, 709148, 741382, 886435, 1148620, 1482764, 1772870, 1853455, 3545740, 3706910, 4077601, 7413820, 8155202, 16310404, 20388005, 40776010, 81552020]

約数ペア:

[(1, 81552020), (2, 40776010), (4, 20388005), (5, 16310404), (10, 8155202), (11, 7413820), (20, 4077601), (22, 3706910), (23, 3545740), (44, 1853455), (46, 1772870), (55, 1482764), (71, 1148620), (92, 886435), (110, 741382), (115, 709148), (142, 574310), (220, 370691), (227, 359260), (230, 354574), (253, 322340), (284, 287155), (355, 229724), (454, 179630), (460, 177287), (506, 161170), (710, 114862), (781, 104420), (908, 89815), (1012, 80585), (1135, 71852), (1265, 64468), (1420, 57431), (1562, 52210), (1633, 49940), (2270, 35926), (2497, 32660), (2530, 32234), (3124, 26105), (3266, 24970), (3905, 20884), (4540, 17963), (4994, 16330), (5060, 16117), (5221, 15620), (6532, 12485), (7810, 10442), (8165, 9988)]