20439976

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{101}}^1\times {\mathrm{617}}^1$

素因数の和:765

約数の個数: 32

約数和(自身を含む): 39712680

約数和(自身を除く): 19272704

約数列:

[1, 2, 4, 8, 41, 82, 101, 164, 202, 328, 404, 617, 808, 1234, 2468, 4141, 4936, 8282, 16564, 25297, 33128, 50594, 62317, 101188, 124634, 202376, 249268, 498536, 2554997, 5109994, 10219988, 20439976]

約数ペア:

[(1, 20439976), (2, 10219988), (4, 5109994), (8, 2554997), (41, 498536), (82, 249268), (101, 202376), (164, 124634), (202, 101188), (328, 62317), (404, 50594), (617, 33128), (808, 25297), (1234, 16564), (2468, 8282), (4141, 4936)]