21257130

素因数分解:

$2^1\times 3^1\times 5^1\times {\mathrm{83}}^1\times {\mathrm{8537}}^1$

素因数の和:8630

約数の個数: 32

約数和(自身を含む): 51637824

約数和(自身を除く): 30380694

約数列:

[1, 2, 3, 5, 6, 10, 15, 30, 83, 166, 249, 415, 498, 830, 1245, 2490, 8537, 17074, 25611, 42685, 51222, 85370, 128055, 256110, 708571, 1417142, 2125713, 3542855, 4251426, 7085710, 10628565, 21257130]

約数ペア:

[(1, 21257130), (2, 10628565), (3, 7085710), (5, 4251426), (6, 3542855), (10, 2125713), (15, 1417142), (30, 708571), (83, 256110), (166, 128055), (249, 85370), (415, 51222), (498, 42685), (830, 25611), (1245, 17074), (2490, 8537)]