20955135

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{2221}}^1$

素因数の和:2283

約数の個数: 32

約数和(自身を含む): 36476352

約数和(自身を除く): 15521217

約数列:

[1, 3, 5, 15, 17, 37, 51, 85, 111, 185, 255, 555, 629, 1887, 2221, 3145, 6663, 9435, 11105, 33315, 37757, 82177, 113271, 188785, 246531, 410885, 566355, 1232655, 1397009, 4191027, 6985045, 20955135]

約数ペア:

[(1, 20955135), (3, 6985045), (5, 4191027), (15, 1397009), (17, 1232655), (37, 566355), (51, 410885), (85, 246531), (111, 188785), (185, 113271), (255, 82177), (555, 37757), (629, 33315), (1887, 11105), (2221, 9435), (3145, 6663)]