2785540

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1$

素因数の和:172

約数の個数: 48

約数和(自身を含む): 6209280

約数和(自身を除く): 3423740

約数列:

[1, 2, 4, 5, 10, 20, 41, 43, 79, 82, 86, 158, 164, 172, 205, 215, 316, 395, 410, 430, 790, 820, 860, 1580, 1763, 3239, 3397, 3526, 6478, 6794, 7052, 8815, 12956, 13588, 16195, 16985, 17630, 32390, 33970, 35260, 64780, 67940, 139277, 278554, 557108, 696385, 1392770, 2785540]

約数ペア:

[(1, 2785540), (2, 1392770), (4, 696385), (5, 557108), (10, 278554), (20, 139277), (41, 67940), (43, 64780), (79, 35260), (82, 33970), (86, 32390), (158, 17630), (164, 16985), (172, 16195), (205, 13588), (215, 12956), (316, 8815), (395, 7052), (410, 6794), (430, 6478), (790, 3526), (820, 3397), (860, 3239), (1580, 1763)]