19981204

素因数分解:

$2^2\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{4621}}^1$

素因数の和:4695

約数の個数: 24

約数和(自身を含む): 37271808

約数和(自身を除く): 17290604

約数列:

[1, 2, 4, 23, 46, 47, 92, 94, 188, 1081, 2162, 4324, 4621, 9242, 18484, 106283, 212566, 217187, 425132, 434374, 868748, 4995301, 9990602, 19981204]

約数ペア:

[(1, 19981204), (2, 9990602), (4, 4995301), (23, 868748), (46, 434374), (47, 425132), (92, 217187), (94, 212566), (188, 106283), (1081, 18484), (2162, 9242), (4324, 4621)]