20176880

素因数分解:

$2^4\times 5^1\times {\mathrm{179}}^1\times {\mathrm{1409}}^1$

素因数の和:1601

約数の個数: 40

約数和(自身を含む): 47206800

約数和(自身を除く): 27029920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 179, 358, 716, 895, 1409, 1432, 1790, 2818, 2864, 3580, 5636, 7045, 7160, 11272, 14090, 14320, 22544, 28180, 56360, 112720, 252211, 504422, 1008844, 1261055, 2017688, 2522110, 4035376, 5044220, 10088440, 20176880]

約数ペア:

[(1, 20176880), (2, 10088440), (4, 5044220), (5, 4035376), (8, 2522110), (10, 2017688), (16, 1261055), (20, 1008844), (40, 504422), (80, 252211), (179, 112720), (358, 56360), (716, 28180), (895, 22544), (1409, 14320), (1432, 14090), (1790, 11272), (2818, 7160), (2864, 7045), (3580, 5636)]