25440520

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{2113}}^1$

素因数の和:2174

約数の個数: 64

約数和(自身を含む): 66971520

約数和(自身を除く): 41531000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 43, 56, 70, 86, 140, 172, 215, 280, 301, 344, 430, 602, 860, 1204, 1505, 1720, 2113, 2408, 3010, 4226, 6020, 8452, 10565, 12040, 14791, 16904, 21130, 29582, 42260, 59164, 73955, 84520, 90859, 118328, 147910, 181718, 295820, 363436, 454295, 591640, 636013, 726872, 908590, 1272026, 1817180, 2544052, 3180065, 3634360, 5088104, 6360130, 12720260, 25440520]

約数ペア:

[(1, 25440520), (2, 12720260), (4, 6360130), (5, 5088104), (7, 3634360), (8, 3180065), (10, 2544052), (14, 1817180), (20, 1272026), (28, 908590), (35, 726872), (40, 636013), (43, 591640), (56, 454295), (70, 363436), (86, 295820), (140, 181718), (172, 147910), (215, 118328), (280, 90859), (301, 84520), (344, 73955), (430, 59164), (602, 42260), (860, 29582), (1204, 21130), (1505, 16904), (1720, 14791), (2113, 12040), (2408, 10565), (3010, 8452), (4226, 6020)]