15236221

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{31}}^1\times {\mathrm{491}}^1$

素因数の和:553

約数の個数: 32

約数和(自身を含む): 21159936

約数和(自身を除く): 5923715

約数列:

[1, 7, 11, 13, 31, 77, 91, 143, 217, 341, 403, 491, 1001, 2387, 2821, 3437, 4433, 5401, 6383, 15221, 31031, 37807, 44681, 70213, 106547, 167431, 197873, 491491, 1172017, 1385111, 2176603, 15236221]

約数ペア:

[(1, 15236221), (7, 2176603), (11, 1385111), (13, 1172017), (31, 491491), (77, 197873), (91, 167431), (143, 106547), (217, 70213), (341, 44681), (403, 37807), (491, 31031), (1001, 15221), (2387, 6383), (2821, 5401), (3437, 4433)]