20389915

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{41}}^1\times {\mathrm{1093}}^1$

素因数の和:1159

約数の個数: 32

約数和(自身を含む): 30877056

約数和(自身を除く): 10487141

約数列:

[1, 5, 7, 13, 35, 41, 65, 91, 205, 287, 455, 533, 1093, 1435, 2665, 3731, 5465, 7651, 14209, 18655, 38255, 44813, 71045, 99463, 224065, 313691, 497315, 582569, 1568455, 2912845, 4077983, 20389915]

約数ペア:

[(1, 20389915), (5, 4077983), (7, 2912845), (13, 1568455), (35, 582569), (41, 497315), (65, 313691), (91, 224065), (205, 99463), (287, 71045), (455, 44813), (533, 38255), (1093, 18655), (1435, 14209), (2665, 7651), (3731, 5465)]