21299955

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{107}}^1\times {\mathrm{577}}^1$

素因数の和:715

約数の個数: 32

約数和(自身を含む): 35956224

約数和(自身を除く): 14656269

約数列:

[1, 3, 5, 15, 23, 69, 107, 115, 321, 345, 535, 577, 1605, 1731, 2461, 2885, 7383, 8655, 12305, 13271, 36915, 39813, 61739, 66355, 185217, 199065, 308695, 926085, 1419997, 4259991, 7099985, 21299955]

約数ペア:

[(1, 21299955), (3, 7099985), (5, 4259991), (15, 1419997), (23, 926085), (69, 308695), (107, 199065), (115, 185217), (321, 66355), (345, 61739), (535, 39813), (577, 36915), (1605, 13271), (1731, 12305), (2461, 8655), (2885, 7383)]