21298360

素因数分解:

$2^3\times 5^1\times {\mathrm{709}}^1\times {\mathrm{751}}^1$

素因数の和:1471

約数の個数: 32

約数和(自身を含む): 48052800

約数和(自身を除く): 26754440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 709, 751, 1418, 1502, 2836, 3004, 3545, 3755, 5672, 6008, 7090, 7510, 14180, 15020, 28360, 30040, 532459, 1064918, 2129836, 2662295, 4259672, 5324590, 10649180, 21298360]

約数ペア:

[(1, 21298360), (2, 10649180), (4, 5324590), (5, 4259672), (8, 2662295), (10, 2129836), (20, 1064918), (40, 532459), (709, 30040), (751, 28360), (1418, 15020), (1502, 14180), (2836, 7510), (3004, 7090), (3545, 6008), (3755, 5672)]