19909968

素因数分解:

$2^4\times 3^1\times {\mathrm{13}}^1\times {\mathrm{31907}}^1$

素因数の和:31931

約数の個数: 40

約数和(自身を含む): 55392288

約数和(自身を除く): 35482320

約数列:

[1, 2, 3, 4, 6, 8, 12, 13, 16, 24, 26, 39, 48, 52, 78, 104, 156, 208, 312, 624, 31907, 63814, 95721, 127628, 191442, 255256, 382884, 414791, 510512, 765768, 829582, 1244373, 1531536, 1659164, 2488746, 3318328, 4977492, 6636656, 9954984, 19909968]

約数ペア:

[(1, 19909968), (2, 9954984), (3, 6636656), (4, 4977492), (6, 3318328), (8, 2488746), (12, 1659164), (13, 1531536), (16, 1244373), (24, 829582), (26, 765768), (39, 510512), (48, 414791), (52, 382884), (78, 255256), (104, 191442), (156, 127628), (208, 95721), (312, 63814), (624, 31907)]