21783180

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{439}}^1\times {\mathrm{827}}^1$

素因数の和:1278

約数の個数: 48

約数和(自身を含む): 61205760

約数和(自身を除く): 39422580

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 439, 827, 878, 1317, 1654, 1756, 2195, 2481, 2634, 3308, 4135, 4390, 4962, 5268, 6585, 8270, 8780, 9924, 12405, 13170, 16540, 24810, 26340, 49620, 363053, 726106, 1089159, 1452212, 1815265, 2178318, 3630530, 4356636, 5445795, 7261060, 10891590, 21783180]

約数ペア:

[(1, 21783180), (2, 10891590), (3, 7261060), (4, 5445795), (5, 4356636), (6, 3630530), (10, 2178318), (12, 1815265), (15, 1452212), (20, 1089159), (30, 726106), (60, 363053), (439, 49620), (827, 26340), (878, 24810), (1317, 16540), (1654, 13170), (1756, 12405), (2195, 9924), (2481, 8780), (2634, 8270), (3308, 6585), (4135, 5268), (4390, 4962)]