21265265

素因数分解:

$5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1$

素因数の和:162

約数の個数: 48

約数和(自身を含む): 31888080

約数和(自身を除く): 10622815

約数列:

[1, 5, 7, 29, 35, 41, 49, 73, 145, 203, 205, 245, 287, 365, 511, 1015, 1189, 1421, 1435, 2009, 2117, 2555, 2993, 3577, 5945, 7105, 8323, 10045, 10585, 14819, 14965, 17885, 20951, 41615, 58261, 74095, 86797, 103733, 104755, 146657, 291305, 433985, 518665, 607579, 733285, 3037895, 4253053, 21265265]

約数ペア:

[(1, 21265265), (5, 4253053), (7, 3037895), (29, 733285), (35, 607579), (41, 518665), (49, 433985), (73, 291305), (145, 146657), (203, 104755), (205, 103733), (245, 86797), (287, 74095), (365, 58261), (511, 41615), (1015, 20951), (1189, 17885), (1421, 14965), (1435, 14819), (2009, 10585), (2117, 10045), (2555, 8323), (2993, 7105), (3577, 5945)]