81406860

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{499}}^1\times {\mathrm{2719}}^1$

素因数の和:3230

約数の個数: 48

約数和(自身を含む): 228480000

約数和(自身を除く): 147073140

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 499, 998, 1497, 1996, 2495, 2719, 2994, 4990, 5438, 5988, 7485, 8157, 9980, 10876, 13595, 14970, 16314, 27190, 29940, 32628, 40785, 54380, 81570, 163140, 1356781, 2713562, 4070343, 5427124, 6783905, 8140686, 13567810, 16281372, 20351715, 27135620, 40703430, 81406860]

約数ペア:

[(1, 81406860), (2, 40703430), (3, 27135620), (4, 20351715), (5, 16281372), (6, 13567810), (10, 8140686), (12, 6783905), (15, 5427124), (20, 4070343), (30, 2713562), (60, 1356781), (499, 163140), (998, 81570), (1497, 54380), (1996, 40785), (2495, 32628), (2719, 29940), (2994, 27190), (4990, 16314), (5438, 14970), (5988, 13595), (7485, 10876), (8157, 9980)]