81584720

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{145687}}^1$

素因数の和:145707

約数の個数: 40

約数和(自身を含む): 216783744

約数和(自身を除く): 135199024

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 145687, 291374, 582748, 728435, 1019809, 1165496, 1456870, 2039618, 2330992, 2913740, 4079236, 5099045, 5827480, 8158472, 10198090, 11654960, 16316944, 20396180, 40792360, 81584720]

約数ペア:

[(1, 81584720), (2, 40792360), (4, 20396180), (5, 16316944), (7, 11654960), (8, 10198090), (10, 8158472), (14, 5827480), (16, 5099045), (20, 4079236), (28, 2913740), (35, 2330992), (40, 2039618), (56, 1456870), (70, 1165496), (80, 1019809), (112, 728435), (140, 582748), (280, 291374), (560, 145687)]