21052844

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{41}}^2\times {\mathrm{101}}^1$

素因数の和:218

約数の個数: 36

約数和(自身を含む): 39367104

約数和(自身を除く): 18314260

約数列:

[1, 2, 4, 31, 41, 62, 82, 101, 124, 164, 202, 404, 1271, 1681, 2542, 3131, 3362, 4141, 5084, 6262, 6724, 8282, 12524, 16564, 52111, 104222, 128371, 169781, 208444, 256742, 339562, 513484, 679124, 5263211, 10526422, 21052844]

約数ペア:

[(1, 21052844), (2, 10526422), (4, 5263211), (31, 679124), (41, 513484), (62, 339562), (82, 256742), (101, 208444), (124, 169781), (164, 128371), (202, 104222), (404, 52111), (1271, 16564), (1681, 12524), (2542, 8282), (3131, 6724), (3362, 6262), (4141, 5084)]