20037904

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{569}}^1$

素因数の和:679

約数の個数: 40

約数和(自身を含む): 40711680

約数和(自身を除く): 20673776

約数列:

[1, 2, 4, 8, 16, 31, 62, 71, 124, 142, 248, 284, 496, 568, 569, 1136, 1138, 2201, 2276, 4402, 4552, 8804, 9104, 17608, 17639, 35216, 35278, 40399, 70556, 80798, 141112, 161596, 282224, 323192, 646384, 1252369, 2504738, 5009476, 10018952, 20037904]

約数ペア:

[(1, 20037904), (2, 10018952), (4, 5009476), (8, 2504738), (16, 1252369), (31, 646384), (62, 323192), (71, 282224), (124, 161596), (142, 141112), (248, 80798), (284, 70556), (496, 40399), (568, 35278), (569, 35216), (1136, 17639), (1138, 17608), (2201, 9104), (2276, 8804), (4402, 4552)]