19660888

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{2393}}^1$

素因数の和:2491

約数の個数: 32

約数和(自身を含む): 40219200

約数和(自身を除く): 20558312

約数列:

[1, 2, 4, 8, 13, 26, 52, 79, 104, 158, 316, 632, 1027, 2054, 2393, 4108, 4786, 8216, 9572, 19144, 31109, 62218, 124436, 189047, 248872, 378094, 756188, 1512376, 2457611, 4915222, 9830444, 19660888]

約数ペア:

[(1, 19660888), (2, 9830444), (4, 4915222), (8, 2457611), (13, 1512376), (26, 756188), (52, 378094), (79, 248872), (104, 189047), (158, 124436), (316, 62218), (632, 31109), (1027, 19144), (2054, 9572), (2393, 8216), (4108, 4786)]