20217715

素因数分解:

$5^1\times 7^1\times {\mathrm{41}}^1\times {\mathrm{73}}^1\times {\mathrm{193}}^1$

素因数の和:319

約数の個数: 32

約数和(自身を含む): 28941696

約数和(自身を除く): 8723981

約数列:

[1, 5, 7, 35, 41, 73, 193, 205, 287, 365, 511, 965, 1351, 1435, 2555, 2993, 6755, 7913, 14089, 14965, 20951, 39565, 55391, 70445, 98623, 104755, 276955, 493115, 577649, 2888245, 4043543, 20217715]

約数ペア:

[(1, 20217715), (5, 4043543), (7, 2888245), (35, 577649), (41, 493115), (73, 276955), (193, 104755), (205, 98623), (287, 70445), (365, 55391), (511, 39565), (965, 20951), (1351, 14965), (1435, 14089), (2555, 7913), (2993, 6755)]