21745185

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{67}}^1\times {\mathrm{281}}^1$

素因数の和:374

約数の個数: 64

約数和(自身を含む): 44181504

約数和(自身を除く): 22436319

約数列:

[1, 3, 5, 7, 11, 15, 21, 33, 35, 55, 67, 77, 105, 165, 201, 231, 281, 335, 385, 469, 737, 843, 1005, 1155, 1405, 1407, 1967, 2211, 2345, 3091, 3685, 4215, 5159, 5901, 7035, 9273, 9835, 11055, 15455, 15477, 18827, 21637, 25795, 29505, 46365, 56481, 64911, 77385, 94135, 108185, 131789, 207097, 282405, 324555, 395367, 621291, 658945, 1035485, 1449679, 1976835, 3106455, 4349037, 7248395, 21745185]

約数ペア:

[(1, 21745185), (3, 7248395), (5, 4349037), (7, 3106455), (11, 1976835), (15, 1449679), (21, 1035485), (33, 658945), (35, 621291), (55, 395367), (67, 324555), (77, 282405), (105, 207097), (165, 131789), (201, 108185), (231, 94135), (281, 77385), (335, 64911), (385, 56481), (469, 46365), (737, 29505), (843, 25795), (1005, 21637), (1155, 18827), (1405, 15477), (1407, 15455), (1967, 11055), (2211, 9835), (2345, 9273), (3091, 7035), (3685, 5901), (4215, 5159)]