20491804

素因数分解:

$2^2\times {\mathrm{19}}^2\times {\mathrm{23}}^1\times {\mathrm{617}}^1$

素因数の和:682

約数の個数: 36

約数和(自身を含む): 39556944

約数和(自身を除く): 19065140

約数列:

[1, 2, 4, 19, 23, 38, 46, 76, 92, 361, 437, 617, 722, 874, 1234, 1444, 1748, 2468, 8303, 11723, 14191, 16606, 23446, 28382, 33212, 46892, 56764, 222737, 269629, 445474, 539258, 890948, 1078516, 5122951, 10245902, 20491804]

約数ペア:

[(1, 20491804), (2, 10245902), (4, 5122951), (19, 1078516), (23, 890948), (38, 539258), (46, 445474), (76, 269629), (92, 222737), (361, 56764), (437, 46892), (617, 33212), (722, 28382), (874, 23446), (1234, 16606), (1444, 14191), (1748, 11723), (2468, 8303)]