248973880

素因数分解:

$2^3\times 5^1\times {\mathrm{487}}^1\times {\mathrm{12781}}^1$

素因数の和:13279

約数の個数: 32

約数和(自身を含む): 561385440

約数和(自身を除く): 312411560

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 487, 974, 1948, 2435, 3896, 4870, 9740, 12781, 19480, 25562, 51124, 63905, 102248, 127810, 255620, 511240, 6224347, 12448694, 24897388, 31121735, 49794776, 62243470, 124486940, 248973880]

約数ペア:

[(1, 248973880), (2, 124486940), (4, 62243470), (5, 49794776), (8, 31121735), (10, 24897388), (20, 12448694), (40, 6224347), (487, 511240), (974, 255620), (1948, 127810), (2435, 102248), (3896, 63905), (4870, 51124), (9740, 25562), (12781, 19480)]