405956120

素因数分解:

$2^3\times 5^1\times {\mathrm{43}}^1\times {\mathrm{236021}}^1$

素因数の和:236075

約数の個数: 32

約数和(自身を含む): 934647120

約数和(自身を除く): 528691000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 43, 86, 172, 215, 344, 430, 860, 1720, 236021, 472042, 944084, 1180105, 1888168, 2360210, 4720420, 9440840, 10148903, 20297806, 40595612, 50744515, 81191224, 101489030, 202978060, 405956120]

約数ペア:

[(1, 405956120), (2, 202978060), (4, 101489030), (5, 81191224), (8, 50744515), (10, 40595612), (20, 20297806), (40, 10148903), (43, 9440840), (86, 4720420), (172, 2360210), (215, 1888168), (344, 1180105), (430, 944084), (860, 472042), (1720, 236021)]