18720428

素因数分解:

$2^2\times {\mathrm{29}}^1\times {\mathrm{71}}^1\times {\mathrm{2273}}^1$

素因数の和:2377

約数の個数: 24

約数和(自身を含む): 34382880

約数和(自身を除く): 15662452

約数列:

[1, 2, 4, 29, 58, 71, 116, 142, 284, 2059, 2273, 4118, 4546, 8236, 9092, 65917, 131834, 161383, 263668, 322766, 645532, 4680107, 9360214, 18720428]

約数ペア:

[(1, 18720428), (2, 9360214), (4, 4680107), (29, 645532), (58, 322766), (71, 263668), (116, 161383), (142, 131834), (284, 65917), (2059, 9092), (2273, 8236), (4118, 4546)]