19712945765

素因数分解:

$5^1\times {\mathrm{17}}^3\times {\mathrm{97}}^1\times {\mathrm{8273}}^1$

素因数の和:8426

約数の個数: 32

約数和(自身を含む): 25395884640

約数和(自身を除く): 5682938875

約数列:

[1, 5, 17, 85, 97, 289, 485, 1445, 1649, 4913, 8245, 8273, 24565, 28033, 41365, 140165, 140641, 476561, 703205, 802481, 2382805, 2390897, 4012405, 11954485, 13642177, 40645249, 68210885, 203226245, 231917009, 1159585045, 3942589153, 19712945765]

約数ペア:

[(1, 19712945765), (5, 3942589153), (17, 1159585045), (85, 231917009), (97, 203226245), (289, 68210885), (485, 40645249), (1445, 13642177), (1649, 11954485), (4913, 4012405), (8245, 2390897), (8273, 2382805), (24565, 802481), (28033, 703205), (41365, 476561), (140165, 140641)]