20118910

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{19}}^1\times {\mathrm{2161}}^1$

素因数の和:2201

約数の個数: 48

約数和(自身を含む): 44364240

約数和(自身を除く): 24245330

約数列:

[1, 2, 5, 7, 10, 14, 19, 35, 38, 49, 70, 95, 98, 133, 190, 245, 266, 490, 665, 931, 1330, 1862, 2161, 4322, 4655, 9310, 10805, 15127, 21610, 30254, 41059, 75635, 82118, 105889, 151270, 205295, 211778, 287413, 410590, 529445, 574826, 1058890, 1437065, 2011891, 2874130, 4023782, 10059455, 20118910]

約数ペア:

[(1, 20118910), (2, 10059455), (5, 4023782), (7, 2874130), (10, 2011891), (14, 1437065), (19, 1058890), (35, 574826), (38, 529445), (49, 410590), (70, 287413), (95, 211778), (98, 205295), (133, 151270), (190, 105889), (245, 82118), (266, 75635), (490, 41059), (665, 30254), (931, 21610), (1330, 15127), (1862, 10805), (2161, 9310), (4322, 4655)]