633580

素因数分解:

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

素因数の和:489

約数の個数: 24

約数和(自身を含む): 1350720

約数和(自身を除く): 717140

約数列:

[1, 2, 4, 5, 10, 20, 79, 158, 316, 395, 401, 790, 802, 1580, 1604, 2005, 4010, 8020, 31679, 63358, 126716, 158395, 316790, 633580]

約数ペア:

[(1, 633580), (2, 316790), (4, 158395), (5, 126716), (10, 63358), (20, 31679), (79, 8020), (158, 4010), (316, 2005), (395, 1604), (401, 1580), (790, 802)]