20181978621

素因数分解:

$3^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{41}}^1\times {\mathrm{459611}}^1$

素因数の和:459682

約数の個数: 48

約数和(自身を含む): 36136533888

約数和(自身を除く): 15954555267

約数列:

[1, 3, 7, 9, 17, 21, 41, 51, 63, 119, 123, 153, 287, 357, 369, 697, 861, 1071, 2091, 2583, 4879, 6273, 14637, 43911, 459611, 1378833, 3217277, 4136499, 7813387, 9651831, 18844051, 23440161, 28955493, 54693709, 56532153, 70320483, 131908357, 164081127, 169596459, 320348867, 395725071, 492243381, 961046601, 1187175213, 2242442069, 2883139803, 6727326207, 20181978621]

約数ペア:

[(1, 20181978621), (3, 6727326207), (7, 2883139803), (9, 2242442069), (17, 1187175213), (21, 961046601), (41, 492243381), (51, 395725071), (63, 320348867), (119, 169596459), (123, 164081127), (153, 131908357), (287, 70320483), (357, 56532153), (369, 54693709), (697, 28955493), (861, 23440161), (1071, 18844051), (2091, 9651831), (2583, 7813387), (4879, 4136499), (6273, 3217277), (14637, 1378833), (43911, 459611)]