20557120

素因数分解:

$2^6\times 5^1\times {\mathrm{227}}^1\times {\mathrm{283}}^1$

素因数の和:527

約数の個数: 56

約数和(自身を含む): 49341024

約数和(自身を除く): 28783904

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 227, 283, 320, 454, 566, 908, 1132, 1135, 1415, 1816, 2264, 2270, 2830, 3632, 4528, 4540, 5660, 7264, 9056, 9080, 11320, 14528, 18112, 18160, 22640, 36320, 45280, 64241, 72640, 90560, 128482, 256964, 321205, 513928, 642410, 1027856, 1284820, 2055712, 2569640, 4111424, 5139280, 10278560, 20557120]

約数ペア:

[(1, 20557120), (2, 10278560), (4, 5139280), (5, 4111424), (8, 2569640), (10, 2055712), (16, 1284820), (20, 1027856), (32, 642410), (40, 513928), (64, 321205), (80, 256964), (160, 128482), (227, 90560), (283, 72640), (320, 64241), (454, 45280), (566, 36320), (908, 22640), (1132, 18160), (1135, 18112), (1415, 14528), (1816, 11320), (2264, 9080), (2270, 9056), (2830, 7264), (3632, 5660), (4528, 4540)]