20996982

素因数分解:

$2^1\times 3^4\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{113}}^1$

素因数の和:195

約数の個数: 80

約数和(自身を含む): 50320512

約数和(自身を除く): 29323530

約数列:

[1, 2, 3, 6, 9, 18, 27, 31, 37, 54, 62, 74, 81, 93, 111, 113, 162, 186, 222, 226, 279, 333, 339, 558, 666, 678, 837, 999, 1017, 1147, 1674, 1998, 2034, 2294, 2511, 2997, 3051, 3441, 3503, 4181, 5022, 5994, 6102, 6882, 7006, 8362, 9153, 10323, 10509, 12543, 18306, 20646, 21018, 25086, 30969, 31527, 37629, 61938, 63054, 75258, 92907, 94581, 112887, 129611, 185814, 189162, 225774, 259222, 283743, 338661, 388833, 567486, 677322, 777666, 1166499, 2332998, 3499497, 6998994, 10498491, 20996982]

約数ペア:

[(1, 20996982), (2, 10498491), (3, 6998994), (6, 3499497), (9, 2332998), (18, 1166499), (27, 777666), (31, 677322), (37, 567486), (54, 388833), (62, 338661), (74, 283743), (81, 259222), (93, 225774), (111, 189162), (113, 185814), (162, 129611), (186, 112887), (222, 94581), (226, 92907), (279, 75258), (333, 63054), (339, 61938), (558, 37629), (666, 31527), (678, 30969), (837, 25086), (999, 21018), (1017, 20646), (1147, 18306), (1674, 12543), (1998, 10509), (2034, 10323), (2294, 9153), (2511, 8362), (2997, 7006), (3051, 6882), (3441, 6102), (3503, 5994), (4181, 5022)]