21351780

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{118621}}^1$

素因数の和:118636

約数の個数: 36

約数和(自身を含む): 64767612

約数和(自身を除く): 43415832

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 118621, 237242, 355863, 474484, 593105, 711726, 1067589, 1186210, 1423452, 1779315, 2135178, 2372420, 3558630, 4270356, 5337945, 7117260, 10675890, 21351780]

約数ペア:

[(1, 21351780), (2, 10675890), (3, 7117260), (4, 5337945), (5, 4270356), (6, 3558630), (9, 2372420), (10, 2135178), (12, 1779315), (15, 1423452), (18, 1186210), (20, 1067589), (30, 711726), (36, 593105), (45, 474484), (60, 355863), (90, 237242), (180, 118621)]