20918012

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{449}}^1\times {\mathrm{613}}^1$

素因数の和:1085

約数の個数: 24

約数和(自身を含む): 38682000

約数和(自身を除く): 17763988

約数列:

[1, 2, 4, 19, 38, 76, 449, 613, 898, 1226, 1796, 2452, 8531, 11647, 17062, 23294, 34124, 46588, 275237, 550474, 1100948, 5229503, 10459006, 20918012]

約数ペア:

[(1, 20918012), (2, 10459006), (4, 5229503), (19, 1100948), (38, 550474), (76, 275237), (449, 46588), (613, 34124), (898, 23294), (1226, 17062), (1796, 11647), (2452, 8531)]