28180120

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{17183}}^1$

素因数の和:17235

約数の個数: 32

約数和(自身を含む): 64955520

約数和(自身を除く): 36775400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1640, 17183, 34366, 68732, 85915, 137464, 171830, 343660, 687320, 704503, 1409006, 2818012, 3522515, 5636024, 7045030, 14090060, 28180120]

約数ペア:

[(1, 28180120), (2, 14090060), (4, 7045030), (5, 5636024), (8, 3522515), (10, 2818012), (20, 1409006), (40, 704503), (41, 687320), (82, 343660), (164, 171830), (205, 137464), (328, 85915), (410, 68732), (820, 34366), (1640, 17183)]