21263025

素因数分解:

$3^1\times 5^2\times 7^1\times {\mathrm{101}}^1\times {\mathrm{401}}^1$

素因数の和:522

約数の個数: 48

約数和(自身を含む): 40675968

約数和(自身を除く): 19412943

約数列:

[1, 3, 5, 7, 15, 21, 25, 35, 75, 101, 105, 175, 303, 401, 505, 525, 707, 1203, 1515, 2005, 2121, 2525, 2807, 3535, 6015, 7575, 8421, 10025, 10605, 14035, 17675, 30075, 40501, 42105, 53025, 70175, 121503, 202505, 210525, 283507, 607515, 850521, 1012525, 1417535, 3037575, 4252605, 7087675, 21263025]

約数ペア:

[(1, 21263025), (3, 7087675), (5, 4252605), (7, 3037575), (15, 1417535), (21, 1012525), (25, 850521), (35, 607515), (75, 283507), (101, 210525), (105, 202505), (175, 121503), (303, 70175), (401, 53025), (505, 42105), (525, 40501), (707, 30075), (1203, 17675), (1515, 14035), (2005, 10605), (2121, 10025), (2525, 8421), (2807, 7575), (3535, 6015)]