999778840

素因数分解:

$2^3\times 5^1\times {\mathrm{17}}^1\times {\mathrm{181}}^1\times {\mathrm{8123}}^1$

素因数の和:8332

約数の個数: 64

約数和(自身を含む): 2395280160

約数和(自身を除く): 1395501320

約数列:

[1, 2, 4, 5, 8, 10, 17, 20, 34, 40, 68, 85, 136, 170, 181, 340, 362, 680, 724, 905, 1448, 1810, 3077, 3620, 6154, 7240, 8123, 12308, 15385, 16246, 24616, 30770, 32492, 40615, 61540, 64984, 81230, 123080, 138091, 162460, 276182, 324920, 552364, 690455, 1104728, 1380910, 1470263, 2761820, 2940526, 5523640, 5881052, 7351315, 11762104, 14702630, 24994471, 29405260, 49988942, 58810520, 99977884, 124972355, 199955768, 249944710, 499889420, 999778840]

約数ペア:

[(1, 999778840), (2, 499889420), (4, 249944710), (5, 199955768), (8, 124972355), (10, 99977884), (17, 58810520), (20, 49988942), (34, 29405260), (40, 24994471), (68, 14702630), (85, 11762104), (136, 7351315), (170, 5881052), (181, 5523640), (340, 2940526), (362, 2761820), (680, 1470263), (724, 1380910), (905, 1104728), (1448, 690455), (1810, 552364), (3077, 324920), (3620, 276182), (6154, 162460), (7240, 138091), (8123, 123080), (12308, 81230), (15385, 64984), (16246, 61540), (24616, 40615), (30770, 32492)]