78680120

素因数分解:

$2^3\times 5^1\times {\mathrm{523}}^1\times {\mathrm{3761}}^1$

素因数の和:4295

約数の個数: 32

約数和(自身を含む): 177415920

約数和(自身を除く): 98735800

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 523, 1046, 2092, 2615, 3761, 4184, 5230, 7522, 10460, 15044, 18805, 20920, 30088, 37610, 75220, 150440, 1967003, 3934006, 7868012, 9835015, 15736024, 19670030, 39340060, 78680120]

約数ペア:

[(1, 78680120), (2, 39340060), (4, 19670030), (5, 15736024), (8, 9835015), (10, 7868012), (20, 3934006), (40, 1967003), (523, 150440), (1046, 75220), (2092, 37610), (2615, 30088), (3761, 20920), (4184, 18805), (5230, 15044), (7522, 10460)]