87392840

素因数分解:

$2^3\times 5^1\times {\mathrm{199}}^1\times {\mathrm{10979}}^1$

素因数の和:11189

約数の個数: 32

約数和(自身を含む): 197640000

約数和(自身を除く): 110247160

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 199, 398, 796, 995, 1592, 1990, 3980, 7960, 10979, 21958, 43916, 54895, 87832, 109790, 219580, 439160, 2184821, 4369642, 8739284, 10924105, 17478568, 21848210, 43696420, 87392840]

約数ペア:

[(1, 87392840), (2, 43696420), (4, 21848210), (5, 17478568), (8, 10924105), (10, 8739284), (20, 4369642), (40, 2184821), (199, 439160), (398, 219580), (796, 109790), (995, 87832), (1592, 54895), (1990, 43916), (3980, 21958), (7960, 10979)]