21806055

素因数分解:

$3^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{53}}^1\times {\mathrm{223}}^1$

素因数の和:328

約数の個数: 48

約数和(自身を含む): 39626496

約数和(自身を除く): 17820441

約数列:

[1, 3, 5, 9, 15, 41, 45, 53, 123, 159, 205, 223, 265, 369, 477, 615, 669, 795, 1115, 1845, 2007, 2173, 2385, 3345, 6519, 9143, 10035, 10865, 11819, 19557, 27429, 32595, 35457, 45715, 59095, 82287, 97785, 106371, 137145, 177285, 411435, 484579, 531855, 1453737, 2422895, 4361211, 7268685, 21806055]

約数ペア:

[(1, 21806055), (3, 7268685), (5, 4361211), (9, 2422895), (15, 1453737), (41, 531855), (45, 484579), (53, 411435), (123, 177285), (159, 137145), (205, 106371), (223, 97785), (265, 82287), (369, 59095), (477, 45715), (615, 35457), (669, 32595), (795, 27429), (1115, 19557), (1845, 11819), (2007, 10865), (2173, 10035), (2385, 9143), (3345, 6519)]