21654590

素因数分解:

$2^1\times 5^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{839}}^1$

素因数の和:964

約数の個数: 32

約数和(自身を含む): 40824000

約数和(自身を除く): 19169410

約数列:

[1, 2, 5, 10, 29, 58, 89, 145, 178, 290, 445, 839, 890, 1678, 2581, 4195, 5162, 8390, 12905, 24331, 25810, 48662, 74671, 121655, 149342, 243310, 373355, 746710, 2165459, 4330918, 10827295, 21654590]

約数ペア:

[(1, 21654590), (2, 10827295), (5, 4330918), (10, 2165459), (29, 746710), (58, 373355), (89, 243310), (145, 149342), (178, 121655), (290, 74671), (445, 48662), (839, 25810), (890, 24331), (1678, 12905), (2581, 8390), (4195, 5162)]