21278280

素因数分解:

$2^3\times 3^1\times 5^1\times {\mathrm{177319}}^1$

素因数の和:177333

約数の個数: 32

約数和(自身を含む): 63835200

約数和(自身を除く): 42556920

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 20, 24, 30, 40, 60, 120, 177319, 354638, 531957, 709276, 886595, 1063914, 1418552, 1773190, 2127828, 2659785, 3546380, 4255656, 5319570, 7092760, 10639140, 21278280]

約数ペア:

[(1, 21278280), (2, 10639140), (3, 7092760), (4, 5319570), (5, 4255656), (6, 3546380), (8, 2659785), (10, 2127828), (12, 1773190), (15, 1418552), (20, 1063914), (24, 886595), (30, 709276), (40, 531957), (60, 354638), (120, 177319)]