21390056

素因数分解:

$2^3\times {\mathrm{151}}^1\times {\mathrm{17707}}^1$

素因数の和:17864

約数の個数: 16

約数和(自身を含む): 40374240

約数和(自身を除く): 18984184

約数列:

[1, 2, 4, 8, 151, 302, 604, 1208, 17707, 35414, 70828, 141656, 2673757, 5347514, 10695028, 21390056]

約数ペア:

[(1, 21390056), (2, 10695028), (4, 5347514), (8, 2673757), (151, 141656), (302, 70828), (604, 35414), (1208, 17707)]