999722480

素因数分解:

$2^4\times 5^1\times {\mathrm{43}}^1\times {\mathrm{290617}}^1$

素因数の和:290673

約数の個数: 40

約数和(自身を含む): 2378417712

約数和(自身を除く): 1378695232

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 43, 80, 86, 172, 215, 344, 430, 688, 860, 1720, 3440, 290617, 581234, 1162468, 1453085, 2324936, 2906170, 4649872, 5812340, 11624680, 12496531, 23249360, 24993062, 49986124, 62482655, 99972248, 124965310, 199944496, 249930620, 499861240, 999722480]

約数ペア:

[(1, 999722480), (2, 499861240), (4, 249930620), (5, 199944496), (8, 124965310), (10, 99972248), (16, 62482655), (20, 49986124), (40, 24993062), (43, 23249360), (80, 12496531), (86, 11624680), (172, 5812340), (215, 4649872), (344, 2906170), (430, 2324936), (688, 1453085), (860, 1162468), (1720, 581234), (3440, 290617)]