81248240

素因数分解:

$2^4\times 5^1\times {\mathrm{1015603}}^1$

素因数の和:1015616

約数の個数: 20

約数和(自身を含む): 188902344

約数和(自身を除く): 107654104

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1015603, 2031206, 4062412, 5078015, 8124824, 10156030, 16249648, 20312060, 40624120, 81248240]

約数ペア:

[(1, 81248240), (2, 40624120), (4, 20312060), (5, 16249648), (8, 10156030), (10, 8124824), (16, 5078015), (20, 4062412), (40, 2031206), (80, 1015603)]