19821371408

素因数分解:

$2^4\times {\mathrm{17}}^1\times {\mathrm{72872689}}^1$

素因数の和:72872714

約数の個数: 20

約数和(自身を含む): 40662961020

約数和(自身を除く): 20841589612

約数列:

[1, 2, 4, 8, 16, 17, 34, 68, 136, 272, 72872689, 145745378, 291490756, 582981512, 1165963024, 1238835713, 2477671426, 4955342852, 9910685704, 19821371408]

約数ペア:

[(1, 19821371408), (2, 9910685704), (4, 4955342852), (8, 2477671426), (16, 1238835713), (17, 1165963024), (34, 582981512), (68, 291490756), (136, 145745378), (272, 72872689)]