21066812

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{149}}^1\times {\mathrm{2719}}^1$

素因数の和:2885

約数の個数: 24

約数和(自身を含む): 39984000

約数和(自身を除く): 18917188

約数列:

[1, 2, 4, 13, 26, 52, 149, 298, 596, 1937, 2719, 3874, 5438, 7748, 10876, 35347, 70694, 141388, 405131, 810262, 1620524, 5266703, 10533406, 21066812]

約数ペア:

[(1, 21066812), (2, 10533406), (4, 5266703), (13, 1620524), (26, 810262), (52, 405131), (149, 141388), (298, 70694), (596, 35347), (1937, 10876), (2719, 7748), (3874, 5438)]