20866335

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{131}}^1$

素因数の和:224

約数の個数: 64

約数和(自身を含む): 40449024

約数和(自身を除く): 19582689

約数列:

[1, 3, 5, 7, 15, 21, 35, 37, 41, 105, 111, 123, 131, 185, 205, 259, 287, 393, 555, 615, 655, 777, 861, 917, 1295, 1435, 1517, 1965, 2751, 3885, 4305, 4551, 4585, 4847, 5371, 7585, 10619, 13755, 14541, 16113, 22755, 24235, 26855, 31857, 33929, 37597, 53095, 72705, 80565, 101787, 112791, 159285, 169645, 187985, 198727, 508935, 563955, 596181, 993635, 1391089, 2980905, 4173267, 6955445, 20866335]

約数ペア:

[(1, 20866335), (3, 6955445), (5, 4173267), (7, 2980905), (15, 1391089), (21, 993635), (35, 596181), (37, 563955), (41, 508935), (105, 198727), (111, 187985), (123, 169645), (131, 159285), (185, 112791), (205, 101787), (259, 80565), (287, 72705), (393, 53095), (555, 37597), (615, 33929), (655, 31857), (777, 26855), (861, 24235), (917, 22755), (1295, 16113), (1435, 14541), (1517, 13755), (1965, 10619), (2751, 7585), (3885, 5371), (4305, 4847), (4551, 4585)]