20213508

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{331}}^1\times {\mathrm{727}}^1$

素因数の和:1072

約数の個数: 48

約数和(自身を含む): 54139904

約数和(自身を除く): 33926396

約数列:

[1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, 84, 331, 662, 727, 993, 1324, 1454, 1986, 2181, 2317, 2908, 3972, 4362, 4634, 5089, 6951, 8724, 9268, 10178, 13902, 15267, 20356, 27804, 30534, 61068, 240637, 481274, 721911, 962548, 1443822, 1684459, 2887644, 3368918, 5053377, 6737836, 10106754, 20213508]

約数ペア:

[(1, 20213508), (2, 10106754), (3, 6737836), (4, 5053377), (6, 3368918), (7, 2887644), (12, 1684459), (14, 1443822), (21, 962548), (28, 721911), (42, 481274), (84, 240637), (331, 61068), (662, 30534), (727, 27804), (993, 20356), (1324, 15267), (1454, 13902), (1986, 10178), (2181, 9268), (2317, 8724), (2908, 6951), (3972, 5089), (4362, 4634)]