20131162940

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{477721}}^1$

素因数の和:477787

約数の個数: 72

約数和(自身を含む): 50321324592

約数和(自身を除く): 30190161652

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 43, 49, 70, 86, 98, 140, 172, 196, 215, 245, 301, 430, 490, 602, 860, 980, 1204, 1505, 2107, 3010, 4214, 6020, 8428, 10535, 21070, 42140, 477721, 955442, 1910884, 2388605, 3344047, 4777210, 6688094, 9554420, 13376188, 16720235, 20542003, 23408329, 33440470, 41084006, 46816658, 66880940, 82168012, 93633316, 102710015, 117041645, 143794021, 205420030, 234083290, 287588042, 410840060, 468166580, 575176084, 718970105, 1006558147, 1437940210, 2013116294, 2875880420, 4026232588, 5032790735, 10065581470, 20131162940]

約数ペア:

[(1, 20131162940), (2, 10065581470), (4, 5032790735), (5, 4026232588), (7, 2875880420), (10, 2013116294), (14, 1437940210), (20, 1006558147), (28, 718970105), (35, 575176084), (43, 468166580), (49, 410840060), (70, 287588042), (86, 234083290), (98, 205420030), (140, 143794021), (172, 117041645), (196, 102710015), (215, 93633316), (245, 82168012), (301, 66880940), (430, 46816658), (490, 41084006), (602, 33440470), (860, 23408329), (980, 20542003), (1204, 16720235), (1505, 13376188), (2107, 9554420), (3010, 6688094), (4214, 4777210), (6020, 3344047), (8428, 2388605), (10535, 1910884), (21070, 955442), (42140, 477721)]