21334180

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{97}}^1\times {\mathrm{1571}}^1$

素因数の和:1684

約数の個数: 48

約数和(自身を含む): 51762816

約数和(自身を除く): 30428636

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 97, 140, 194, 388, 485, 679, 970, 1358, 1571, 1940, 2716, 3142, 3395, 6284, 6790, 7855, 10997, 13580, 15710, 21994, 31420, 43988, 54985, 109970, 152387, 219940, 304774, 609548, 761935, 1066709, 1523870, 2133418, 3047740, 4266836, 5333545, 10667090, 21334180]

約数ペア:

[(1, 21334180), (2, 10667090), (4, 5333545), (5, 4266836), (7, 3047740), (10, 2133418), (14, 1523870), (20, 1066709), (28, 761935), (35, 609548), (70, 304774), (97, 219940), (140, 152387), (194, 109970), (388, 54985), (485, 43988), (679, 31420), (970, 21994), (1358, 15710), (1571, 13580), (1940, 10997), (2716, 7855), (3142, 6790), (3395, 6284)]