21218673

素因数分解:

$3^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{197}}^1\times {\mathrm{223}}^1$

素因数の和:453

約数の個数: 32

約数和(自身を含む): 34062336

約数和(自身を除く): 12843663

約数列:

[1, 3, 7, 21, 23, 69, 161, 197, 223, 483, 591, 669, 1379, 1561, 4137, 4531, 4683, 5129, 13593, 15387, 31717, 35903, 43931, 95151, 107709, 131793, 307517, 922551, 1010413, 3031239, 7072891, 21218673]

約数ペア:

[(1, 21218673), (3, 7072891), (7, 3031239), (21, 1010413), (23, 922551), (69, 307517), (161, 131793), (197, 107709), (223, 95151), (483, 43931), (591, 35903), (669, 31717), (1379, 15387), (1561, 13593), (4137, 5129), (4531, 4683)]