21637924

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{163}}^1\times {\mathrm{431}}^1$

素因数の和:616

約数の個数: 48

約数和(自身を含む): 47609856

約数和(自身を除く): 25971932

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 77, 154, 163, 308, 326, 431, 652, 862, 1141, 1724, 1793, 2282, 3017, 3586, 4564, 4741, 6034, 7172, 9482, 12068, 12551, 18964, 25102, 33187, 50204, 66374, 70253, 132748, 140506, 281012, 491771, 772783, 983542, 1545566, 1967084, 3091132, 5409481, 10818962, 21637924]

約数ペア:

[(1, 21637924), (2, 10818962), (4, 5409481), (7, 3091132), (11, 1967084), (14, 1545566), (22, 983542), (28, 772783), (44, 491771), (77, 281012), (154, 140506), (163, 132748), (308, 70253), (326, 66374), (431, 50204), (652, 33187), (862, 25102), (1141, 18964), (1724, 12551), (1793, 12068), (2282, 9482), (3017, 7172), (3586, 6034), (4564, 4741)]