81230120

素因数分解:

$2^3\times 5^1\times {\mathrm{107}}^1\times {\mathrm{18979}}^1$

素因数の和:19097

約数の個数: 32

約数和(自身を含む): 184485600

約数和(自身を除く): 103255480

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 107, 214, 428, 535, 856, 1070, 2140, 4280, 18979, 37958, 75916, 94895, 151832, 189790, 379580, 759160, 2030753, 4061506, 8123012, 10153765, 16246024, 20307530, 40615060, 81230120]

約数ペア:

[(1, 81230120), (2, 40615060), (4, 20307530), (5, 16246024), (8, 10153765), (10, 8123012), (20, 4061506), (40, 2030753), (107, 759160), (214, 379580), (428, 189790), (535, 151832), (856, 94895), (1070, 75916), (2140, 37958), (4280, 18979)]