20540180

素因数分解:

$2^2\times 5^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{677}}^1$

素因数の和:764

約数の個数: 48

約数和(自身を含む): 45447696

約数和(自身を除く): 24907516

約数列:

[1, 2, 4, 5, 10, 20, 37, 41, 74, 82, 148, 164, 185, 205, 370, 410, 677, 740, 820, 1354, 1517, 2708, 3034, 3385, 6068, 6770, 7585, 13540, 15170, 25049, 27757, 30340, 50098, 55514, 100196, 111028, 125245, 138785, 250490, 277570, 500980, 555140, 1027009, 2054018, 4108036, 5135045, 10270090, 20540180]

約数ペア:

[(1, 20540180), (2, 10270090), (4, 5135045), (5, 4108036), (10, 2054018), (20, 1027009), (37, 555140), (41, 500980), (74, 277570), (82, 250490), (148, 138785), (164, 125245), (185, 111028), (205, 100196), (370, 55514), (410, 50098), (677, 30340), (740, 27757), (820, 25049), (1354, 15170), (1517, 13540), (2708, 7585), (3034, 6770), (3385, 6068)]