213240920

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{54959}}^1$

素因数の和:55067

約数の個数: 32

約数和(自身を含む): 484747200

約数和(自身を除く): 271506280

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940, 3880, 54959, 109918, 219836, 274795, 439672, 549590, 1099180, 2198360, 5331023, 10662046, 21324092, 26655115, 42648184, 53310230, 106620460, 213240920]

約数ペア:

[(1, 213240920), (2, 106620460), (4, 53310230), (5, 42648184), (8, 26655115), (10, 21324092), (20, 10662046), (40, 5331023), (97, 2198360), (194, 1099180), (388, 549590), (485, 439672), (776, 274795), (970, 219836), (1940, 109918), (3880, 54959)]