20419917

素因数分解:

$3^1\times 7^2\times {\mathrm{31}}^1\times {\mathrm{4481}}^1$

素因数の和:4529

約数の個数: 24

約数和(自身を含む): 32700672

約数和(自身を除く): 12280755

約数列:

[1, 3, 7, 21, 31, 49, 93, 147, 217, 651, 1519, 4481, 4557, 13443, 31367, 94101, 138911, 219569, 416733, 658707, 972377, 2917131, 6806639, 20419917]

約数ペア:

[(1, 20419917), (3, 6806639), (7, 2917131), (21, 972377), (31, 658707), (49, 416733), (93, 219569), (147, 138911), (217, 94101), (651, 31367), (1519, 13443), (4481, 4557)]