21293055

素因数分解:

$3^2\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{2939}}^1$

素因数の和:2980

約数の個数: 48

約数和(自身を含む): 44029440

約数和(自身を除く): 22736385

約数列:

[1, 3, 5, 7, 9, 15, 21, 23, 35, 45, 63, 69, 105, 115, 161, 207, 315, 345, 483, 805, 1035, 1449, 2415, 2939, 7245, 8817, 14695, 20573, 26451, 44085, 61719, 67597, 102865, 132255, 185157, 202791, 308595, 337985, 473179, 608373, 925785, 1013955, 1419537, 2365895, 3041865, 4258611, 7097685, 21293055]

約数ペア:

[(1, 21293055), (3, 7097685), (5, 4258611), (7, 3041865), (9, 2365895), (15, 1419537), (21, 1013955), (23, 925785), (35, 608373), (45, 473179), (63, 337985), (69, 308595), (105, 202791), (115, 185157), (161, 132255), (207, 102865), (315, 67597), (345, 61719), (483, 44085), (805, 26451), (1035, 20573), (1449, 14695), (2415, 8817), (2939, 7245)]