19942240

素因数分解:

$2^5\times 5^1\times {\mathrm{113}}^1\times {\mathrm{1103}}^1$

素因数の和:1231

約数の個数: 48

約数和(自身を含む): 47573568

約数和(自身を除く): 27631328

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 113, 160, 226, 452, 565, 904, 1103, 1130, 1808, 2206, 2260, 3616, 4412, 4520, 5515, 8824, 9040, 11030, 17648, 18080, 22060, 35296, 44120, 88240, 124639, 176480, 249278, 498556, 623195, 997112, 1246390, 1994224, 2492780, 3988448, 4985560, 9971120, 19942240]

約数ペア:

[(1, 19942240), (2, 9971120), (4, 4985560), (5, 3988448), (8, 2492780), (10, 1994224), (16, 1246390), (20, 997112), (32, 623195), (40, 498556), (80, 249278), (113, 176480), (160, 124639), (226, 88240), (452, 44120), (565, 35296), (904, 22060), (1103, 18080), (1130, 17648), (1808, 11030), (2206, 9040), (2260, 8824), (3616, 5515), (4412, 4520)]