21999628

素因数分解:

$2^2\times 7^2\times {\mathrm{107}}^1\times {\mathrm{1049}}^1$

素因数の和:1174

約数の個数: 36

約数和(自身を含む): 45246600

約数和(自身を除く): 23246972

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 107, 196, 214, 428, 749, 1049, 1498, 2098, 2996, 4196, 5243, 7343, 10486, 14686, 20972, 29372, 51401, 102802, 112243, 205604, 224486, 448972, 785701, 1571402, 3142804, 5499907, 10999814, 21999628]

約数ペア:

[(1, 21999628), (2, 10999814), (4, 5499907), (7, 3142804), (14, 1571402), (28, 785701), (49, 448972), (98, 224486), (107, 205604), (196, 112243), (214, 102802), (428, 51401), (749, 29372), (1049, 20972), (1498, 14686), (2098, 10486), (2996, 7343), (4196, 5243)]