1278385664

素因数分解:

$2^9\times {\mathrm{19}}^1\times {\mathrm{131413}}^1$

素因数の和:131450

約数の個数: 40

約数和(自身を含む): 2688730440

約数和(自身を除く): 1410344776

約数列:

[1, 2, 4, 8, 16, 19, 32, 38, 64, 76, 128, 152, 256, 304, 512, 608, 1216, 2432, 4864, 9728, 131413, 262826, 525652, 1051304, 2102608, 2496847, 4205216, 4993694, 8410432, 9987388, 16820864, 19974776, 33641728, 39949552, 67283456, 79899104, 159798208, 319596416, 639192832, 1278385664]

約数ペア:

[(1, 1278385664), (2, 639192832), (4, 319596416), (8, 159798208), (16, 79899104), (19, 67283456), (32, 39949552), (38, 33641728), (64, 19974776), (76, 16820864), (128, 9987388), (152, 8410432), (256, 4993694), (304, 4205216), (512, 2496847), (608, 2102608), (1216, 1051304), (2432, 525652), (4864, 262826), (9728, 131413)]