7947639

素因数分解:

$3^4\times 7^1\times {\mathrm{107}}^1\times {\mathrm{131}}^1$

素因数の和:257

約数の個数: 40

約数和(自身を含む): 13799808

約数和(自身を除く): 5852169

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 107, 131, 189, 321, 393, 567, 749, 917, 963, 1179, 2247, 2751, 2889, 3537, 6741, 8253, 8667, 10611, 14017, 20223, 24759, 42051, 60669, 74277, 98119, 126153, 294357, 378459, 883071, 1135377, 2649213, 7947639]

約数ペア:

[(1, 7947639), (3, 2649213), (7, 1135377), (9, 883071), (21, 378459), (27, 294357), (63, 126153), (81, 98119), (107, 74277), (131, 60669), (189, 42051), (321, 24759), (393, 20223), (567, 14017), (749, 10611), (917, 8667), (963, 8253), (1179, 6741), (2247, 3537), (2751, 2889)]