21531906

素因数分解:

$2^1\times 3^4\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{281}}^1$

素因数の和:349

約数の個数: 80

約数和(自身を含む): 54049248

約数和(自身を除く): 32517342

約数列:

[1, 2, 3, 6, 9, 11, 18, 22, 27, 33, 43, 54, 66, 81, 86, 99, 129, 162, 198, 258, 281, 297, 387, 473, 562, 594, 774, 843, 891, 946, 1161, 1419, 1686, 1782, 2322, 2529, 2838, 3091, 3483, 4257, 5058, 6182, 6966, 7587, 8514, 9273, 12083, 12771, 15174, 18546, 22761, 24166, 25542, 27819, 36249, 38313, 45522, 55638, 72498, 76626, 83457, 108747, 132913, 166914, 217494, 250371, 265826, 326241, 398739, 500742, 652482, 797478, 978723, 1196217, 1957446, 2392434, 3588651, 7177302, 10765953, 21531906]

約数ペア:

[(1, 21531906), (2, 10765953), (3, 7177302), (6, 3588651), (9, 2392434), (11, 1957446), (18, 1196217), (22, 978723), (27, 797478), (33, 652482), (43, 500742), (54, 398739), (66, 326241), (81, 265826), (86, 250371), (99, 217494), (129, 166914), (162, 132913), (198, 108747), (258, 83457), (281, 76626), (297, 72498), (387, 55638), (473, 45522), (562, 38313), (594, 36249), (774, 27819), (843, 25542), (891, 24166), (946, 22761), (1161, 18546), (1419, 15174), (1686, 12771), (1782, 12083), (2322, 9273), (2529, 8514), (2838, 7587), (3091, 6966), (3483, 6182), (4257, 5058)]