18870136

素因数分解:

$2^3\times {\mathrm{17}}^1\times {\mathrm{89}}^1\times {\mathrm{1559}}^1$

素因数の和:1671

約数の個数: 32

約数和(自身を含む): 37908000

約数和(自身を除く): 19037864

約数列:

[1, 2, 4, 8, 17, 34, 68, 89, 136, 178, 356, 712, 1513, 1559, 3026, 3118, 6052, 6236, 12104, 12472, 26503, 53006, 106012, 138751, 212024, 277502, 555004, 1110008, 2358767, 4717534, 9435068, 18870136]

約数ペア:

[(1, 18870136), (2, 9435068), (4, 4717534), (8, 2358767), (17, 1110008), (34, 555004), (68, 277502), (89, 212024), (136, 138751), (178, 106012), (356, 53006), (712, 26503), (1513, 12472), (1559, 12104), (3026, 6236), (3118, 6052)]