21078465

素因数分解:

$3^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{107}}^1\times {\mathrm{571}}^1$

素因数の和:709

約数の個数: 32

約数和(自身を含む): 35582976

約数和(自身を除く): 14504511

約数列:

[1, 3, 5, 15, 23, 69, 107, 115, 321, 345, 535, 571, 1605, 1713, 2461, 2855, 7383, 8565, 12305, 13133, 36915, 39399, 61097, 65665, 183291, 196995, 305485, 916455, 1405231, 4215693, 7026155, 21078465]

約数ペア:

[(1, 21078465), (3, 7026155), (5, 4215693), (15, 1405231), (23, 916455), (69, 305485), (107, 196995), (115, 183291), (321, 65665), (345, 61097), (535, 39399), (571, 36915), (1605, 13133), (1713, 12305), (2461, 8565), (2855, 7383)]