19858072

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{2417}}^1$

素因数の和:2515

約数の個数: 32

約数和(自身を含む): 40622400

約数和(自身を除く): 20764328

約数列:

[1, 2, 4, 8, 13, 26, 52, 79, 104, 158, 316, 632, 1027, 2054, 2417, 4108, 4834, 8216, 9668, 19336, 31421, 62842, 125684, 190943, 251368, 381886, 763772, 1527544, 2482259, 4964518, 9929036, 19858072]

約数ペア:

[(1, 19858072), (2, 9929036), (4, 4964518), (8, 2482259), (13, 1527544), (26, 763772), (52, 381886), (79, 251368), (104, 190943), (158, 125684), (316, 62842), (632, 31421), (1027, 19336), (2054, 9668), (2417, 8216), (4108, 4834)]