20377904

素因数分解:

$2^4\times {\mathrm{61}}^1\times {\mathrm{20879}}^1$

素因数の和:20948

約数の個数: 20

約数和(自身を含む): 40131360

約数和(自身を除く): 19753456

約数列:

[1, 2, 4, 8, 16, 61, 122, 244, 488, 976, 20879, 41758, 83516, 167032, 334064, 1273619, 2547238, 5094476, 10188952, 20377904]

約数ペア:

[(1, 20377904), (2, 10188952), (4, 5094476), (8, 2547238), (16, 1273619), (61, 334064), (122, 167032), (244, 83516), (488, 41758), (976, 20879)]