21145278

素因数分解:

$2^1\times 3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{1237}}^1$

素因数の和:1297

約数の個数: 64

約数和(自身を含む): 54194688

約数和(自身を除く): 33049410

約数列:

[1, 2, 3, 6, 7, 11, 14, 21, 22, 33, 37, 42, 66, 74, 77, 111, 154, 222, 231, 259, 407, 462, 518, 777, 814, 1221, 1237, 1554, 2442, 2474, 2849, 3711, 5698, 7422, 8547, 8659, 13607, 17094, 17318, 25977, 27214, 40821, 45769, 51954, 81642, 91538, 95249, 137307, 190498, 274614, 285747, 320383, 503459, 571494, 640766, 961149, 1006918, 1510377, 1922298, 3020754, 3524213, 7048426, 10572639, 21145278]

約数ペア:

[(1, 21145278), (2, 10572639), (3, 7048426), (6, 3524213), (7, 3020754), (11, 1922298), (14, 1510377), (21, 1006918), (22, 961149), (33, 640766), (37, 571494), (42, 503459), (66, 320383), (74, 285747), (77, 274614), (111, 190498), (154, 137307), (222, 95249), (231, 91538), (259, 81642), (407, 51954), (462, 45769), (518, 40821), (777, 27214), (814, 25977), (1221, 17318), (1237, 17094), (1554, 13607), (2442, 8659), (2474, 8547), (2849, 7422), (3711, 5698)]