25976780

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{79}}^1\times {\mathrm{401}}^1$

素因数の和:530

約数の個数: 48

約数和(自身を含む): 56730240

約数和(自身を除く): 30753460

約数列:

[1, 2, 4, 5, 10, 20, 41, 79, 82, 158, 164, 205, 316, 395, 401, 410, 790, 802, 820, 1580, 1604, 2005, 3239, 4010, 6478, 8020, 12956, 16195, 16441, 31679, 32390, 32882, 63358, 64780, 65764, 82205, 126716, 158395, 164410, 316790, 328820, 633580, 1298839, 2597678, 5195356, 6494195, 12988390, 25976780]

約数ペア:

[(1, 25976780), (2, 12988390), (4, 6494195), (5, 5195356), (10, 2597678), (20, 1298839), (41, 633580), (79, 328820), (82, 316790), (158, 164410), (164, 158395), (205, 126716), (316, 82205), (395, 65764), (401, 64780), (410, 63358), (790, 32882), (802, 32390), (820, 31679), (1580, 16441), (1604, 16195), (2005, 12956), (3239, 8020), (4010, 6478)]