21942544

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{41}}^1\times {\mathrm{83}}^1$

素因数の和:176

約数の個数: 80

約数和(自身を含む): 48996864

約数和(自身を除く): 27054320

約数列:

[1, 2, 4, 8, 13, 16, 26, 31, 41, 52, 62, 82, 83, 104, 124, 164, 166, 208, 248, 328, 332, 403, 496, 533, 656, 664, 806, 1066, 1079, 1271, 1328, 1612, 2132, 2158, 2542, 2573, 3224, 3403, 4264, 4316, 5084, 5146, 6448, 6806, 8528, 8632, 10168, 10292, 13612, 16523, 17264, 20336, 20584, 27224, 33046, 33449, 41168, 44239, 54448, 66092, 66898, 88478, 105493, 132184, 133796, 176956, 210986, 264368, 267592, 353912, 421972, 535184, 707824, 843944, 1371409, 1687888, 2742818, 5485636, 10971272, 21942544]

約数ペア:

[(1, 21942544), (2, 10971272), (4, 5485636), (8, 2742818), (13, 1687888), (16, 1371409), (26, 843944), (31, 707824), (41, 535184), (52, 421972), (62, 353912), (82, 267592), (83, 264368), (104, 210986), (124, 176956), (164, 133796), (166, 132184), (208, 105493), (248, 88478), (328, 66898), (332, 66092), (403, 54448), (496, 44239), (533, 41168), (656, 33449), (664, 33046), (806, 27224), (1066, 20584), (1079, 20336), (1271, 17264), (1328, 16523), (1612, 13612), (2132, 10292), (2158, 10168), (2542, 8632), (2573, 8528), (3224, 6806), (3403, 6448), (4264, 5146), (4316, 5084)]