40387840

素因数分解:

$2^8\times 5^1\times {\mathrm{139}}^1\times {\mathrm{227}}^1$

素因数の和:387

約数の個数: 72

約数和(自身を含む): 97866720

約数和(自身を除く): 57478880

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 139, 160, 227, 256, 278, 320, 454, 556, 640, 695, 908, 1112, 1135, 1280, 1390, 1816, 2224, 2270, 2780, 3632, 4448, 4540, 5560, 7264, 8896, 9080, 11120, 14528, 17792, 18160, 22240, 29056, 31553, 35584, 36320, 44480, 58112, 63106, 72640, 88960, 126212, 145280, 157765, 177920, 252424, 290560, 315530, 504848, 631060, 1009696, 1262120, 2019392, 2524240, 4038784, 5048480, 8077568, 10096960, 20193920, 40387840]

約数ペア:

[(1, 40387840), (2, 20193920), (4, 10096960), (5, 8077568), (8, 5048480), (10, 4038784), (16, 2524240), (20, 2019392), (32, 1262120), (40, 1009696), (64, 631060), (80, 504848), (128, 315530), (139, 290560), (160, 252424), (227, 177920), (256, 157765), (278, 145280), (320, 126212), (454, 88960), (556, 72640), (640, 63106), (695, 58112), (908, 44480), (1112, 36320), (1135, 35584), (1280, 31553), (1390, 29056), (1816, 22240), (2224, 18160), (2270, 17792), (2780, 14528), (3632, 11120), (4448, 9080), (4540, 8896), (5560, 7264)]