1640384620

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{131}}^1\times {\mathrm{89443}}^1$

素因数の和:89590

約数の個数: 48

約数和(自身を含む): 3967020288

約数和(自身を除く): 2326635668

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 131, 140, 262, 524, 655, 917, 1310, 1834, 2620, 3668, 4585, 9170, 18340, 89443, 178886, 357772, 447215, 626101, 894430, 1252202, 1788860, 2504404, 3130505, 6261010, 11717033, 12522020, 23434066, 46868132, 58585165, 82019231, 117170330, 164038462, 234340660, 328076924, 410096155, 820192310, 1640384620]

約数ペア:

[(1, 1640384620), (2, 820192310), (4, 410096155), (5, 328076924), (7, 234340660), (10, 164038462), (14, 117170330), (20, 82019231), (28, 58585165), (35, 46868132), (70, 23434066), (131, 12522020), (140, 11717033), (262, 6261010), (524, 3130505), (655, 2504404), (917, 1788860), (1310, 1252202), (1834, 894430), (2620, 626101), (3668, 447215), (4585, 357772), (9170, 178886), (18340, 89443)]