21039710

素因数分解:

$2^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{23}}^1\times {\mathrm{5381}}^1$

素因数の和:5428

約数の個数: 32

約数和(自身を含む): 41850432

約数和(自身を除く): 20810722

約数列:

[1, 2, 5, 10, 17, 23, 34, 46, 85, 115, 170, 230, 391, 782, 1955, 3910, 5381, 10762, 26905, 53810, 91477, 123763, 182954, 247526, 457385, 618815, 914770, 1237630, 2103971, 4207942, 10519855, 21039710]

約数ペア:

[(1, 21039710), (2, 10519855), (5, 4207942), (10, 2103971), (17, 1237630), (23, 914770), (34, 618815), (46, 457385), (85, 247526), (115, 182954), (170, 123763), (230, 91477), (391, 53810), (782, 26905), (1955, 10762), (3910, 5381)]