87816280

素因数分解:

$2^3\times 5^1\times {\mathrm{1039}}^1\times {\mathrm{2113}}^1$

素因数の和:3163

約数の個数: 32

約数和(自身を含む): 197870400

約数和(自身を除く): 110054120

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1039, 2078, 2113, 4156, 4226, 5195, 8312, 8452, 10390, 10565, 16904, 20780, 21130, 41560, 42260, 84520, 2195407, 4390814, 8781628, 10977035, 17563256, 21954070, 43908140, 87816280]

約数ペア:

[(1, 87816280), (2, 43908140), (4, 21954070), (5, 17563256), (8, 10977035), (10, 8781628), (20, 4390814), (40, 2195407), (1039, 84520), (2078, 42260), (2113, 41560), (4156, 21130), (4226, 20780), (5195, 16904), (8312, 10565), (8452, 10390)]