20717455

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{31}}^1\times {\mathrm{419}}^1$

素因数の和:495

約数の個数: 32

約数和(自身を含む): 29030400

約数和(自身を除く): 8312945

約数列:

[1, 5, 11, 29, 31, 55, 145, 155, 319, 341, 419, 899, 1595, 1705, 2095, 4495, 4609, 9889, 12151, 12989, 23045, 49445, 60755, 64945, 133661, 142879, 376681, 668305, 714395, 1883405, 4143491, 20717455]

約数ペア:

[(1, 20717455), (5, 4143491), (11, 1883405), (29, 714395), (31, 668305), (55, 376681), (145, 142879), (155, 133661), (319, 64945), (341, 60755), (419, 49445), (899, 23045), (1595, 12989), (1705, 12151), (2095, 9889), (4495, 4609)]