21143618

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{41}}^2\times {\mathrm{331}}^1$

素因数の和:434

約数の個数: 24

約数和(自身を含む): 34322160

約数和(自身を除く): 13178542

約数列:

[1, 2, 19, 38, 41, 82, 331, 662, 779, 1558, 1681, 3362, 6289, 12578, 13571, 27142, 31939, 63878, 257849, 515698, 556411, 1112822, 10571809, 21143618]

約数ペア:

[(1, 21143618), (2, 10571809), (19, 1112822), (38, 556411), (41, 515698), (82, 257849), (331, 63878), (662, 31939), (779, 27142), (1558, 13571), (1681, 12578), (3362, 6289)]