81466480

素因数分解:

$2^4\times 5^1\times {\mathrm{179}}^1\times {\mathrm{5689}}^1$

素因数の和:5881

約数の個数: 40

約数和(自身を含む): 190501200

約数和(自身を除く): 109034720

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 179, 358, 716, 895, 1432, 1790, 2864, 3580, 5689, 7160, 11378, 14320, 22756, 28445, 45512, 56890, 91024, 113780, 227560, 455120, 1018331, 2036662, 4073324, 5091655, 8146648, 10183310, 16293296, 20366620, 40733240, 81466480]

約数ペア:

[(1, 81466480), (2, 40733240), (4, 20366620), (5, 16293296), (8, 10183310), (10, 8146648), (16, 5091655), (20, 4073324), (40, 2036662), (80, 1018331), (179, 455120), (358, 227560), (716, 113780), (895, 91024), (1432, 56890), (1790, 45512), (2864, 28445), (3580, 22756), (5689, 14320), (7160, 11378)]