21617508

素因数分解:

$2^2\times 3^1\times {\mathrm{11}}^1\times {\mathrm{389}}^1\times {\mathrm{421}}^1$

素因数の和:828

約数の個数: 48

約数和(自身を含む): 55298880

約数和(自身を除く): 33681372

約数列:

[1, 2, 3, 4, 6, 11, 12, 22, 33, 44, 66, 132, 389, 421, 778, 842, 1167, 1263, 1556, 1684, 2334, 2526, 4279, 4631, 4668, 5052, 8558, 9262, 12837, 13893, 17116, 18524, 25674, 27786, 51348, 55572, 163769, 327538, 491307, 655076, 982614, 1801459, 1965228, 3602918, 5404377, 7205836, 10808754, 21617508]

約数ペア:

[(1, 21617508), (2, 10808754), (3, 7205836), (4, 5404377), (6, 3602918), (11, 1965228), (12, 1801459), (22, 982614), (33, 655076), (44, 491307), (66, 327538), (132, 163769), (389, 55572), (421, 51348), (778, 27786), (842, 25674), (1167, 18524), (1263, 17116), (1556, 13893), (1684, 12837), (2334, 9262), (2526, 8558), (4279, 5052), (4631, 4668)]