19937709

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{5443}}^1$

素因数の和:5497

約数の個数: 24

約数和(自身を含む): 32272032

約数和(自身を除く): 12334323

約数列:

[1, 3, 9, 11, 33, 37, 99, 111, 333, 407, 1221, 3663, 5443, 16329, 48987, 59873, 179619, 201391, 538857, 604173, 1812519, 2215301, 6645903, 19937709]

約数ペア:

[(1, 19937709), (3, 6645903), (9, 2215301), (11, 1812519), (33, 604173), (37, 538857), (99, 201391), (111, 179619), (333, 59873), (407, 48987), (1221, 16329), (3663, 5443)]