81102040

素因数分解:

$2^3\times 5^1\times {\mathrm{1409}}^1\times {\mathrm{1439}}^1$

素因数の和:2859

約数の個数: 32

約数和(自身を含む): 182736000

約数和(自身を除く): 101633960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1409, 1439, 2818, 2878, 5636, 5756, 7045, 7195, 11272, 11512, 14090, 14390, 28180, 28780, 56360, 57560, 2027551, 4055102, 8110204, 10137755, 16220408, 20275510, 40551020, 81102040]

約数ペア:

[(1, 81102040), (2, 40551020), (4, 20275510), (5, 16220408), (8, 10137755), (10, 8110204), (20, 4055102), (40, 2027551), (1409, 57560), (1439, 56360), (2818, 28780), (2878, 28180), (5636, 14390), (5756, 14090), (7045, 11512), (7195, 11272)]