21396848

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{61}}^1\times {\mathrm{1993}}^1$

素因数の和:2073

約数の個数: 40

約数和(自身を含む): 45989616

約数和(自身を除く): 24592768

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 61, 88, 122, 176, 244, 488, 671, 976, 1342, 1993, 2684, 3986, 5368, 7972, 10736, 15944, 21923, 31888, 43846, 87692, 121573, 175384, 243146, 350768, 486292, 972584, 1337303, 1945168, 2674606, 5349212, 10698424, 21396848]

約数ペア:

[(1, 21396848), (2, 10698424), (4, 5349212), (8, 2674606), (11, 1945168), (16, 1337303), (22, 972584), (44, 486292), (61, 350768), (88, 243146), (122, 175384), (176, 121573), (244, 87692), (488, 43846), (671, 31888), (976, 21923), (1342, 15944), (1993, 10736), (2684, 7972), (3986, 5368)]