71272520

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{161983}}^1$

素因数の和:162005

約数の個数: 32

約数和(自身を含む): 174942720

約数和(自身を除く): 103670200

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 161983, 323966, 647932, 809915, 1295864, 1619830, 1781813, 3239660, 3563626, 6479320, 7127252, 8909065, 14254504, 17818130, 35636260, 71272520]

約数ペア:

[(1, 71272520), (2, 35636260), (4, 17818130), (5, 14254504), (8, 8909065), (10, 7127252), (11, 6479320), (20, 3563626), (22, 3239660), (40, 1781813), (44, 1619830), (55, 1295864), (88, 809915), (110, 647932), (220, 323966), (440, 161983)]