19513072

素因数分解:

$2^4\times {\mathrm{71}}^1\times {\mathrm{89}}^1\times {\mathrm{193}}^1$

素因数の和:361

約数の個数: 40

約数和(自身を含む): 38970720

約数和(自身を除く): 19457648

約数列:

[1, 2, 4, 8, 16, 71, 89, 142, 178, 193, 284, 356, 386, 568, 712, 772, 1136, 1424, 1544, 3088, 6319, 12638, 13703, 17177, 25276, 27406, 34354, 50552, 54812, 68708, 101104, 109624, 137416, 219248, 274832, 1219567, 2439134, 4878268, 9756536, 19513072]

約数ペア:

[(1, 19513072), (2, 9756536), (4, 4878268), (8, 2439134), (16, 1219567), (71, 274832), (89, 219248), (142, 137416), (178, 109624), (193, 101104), (284, 68708), (356, 54812), (386, 50552), (568, 34354), (712, 27406), (772, 25276), (1136, 17177), (1424, 13703), (1544, 12638), (3088, 6319)]