648045008

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{163979}}^1$

素因数の和:164019

約数の個数: 40

約数和(自身を含む): 1423346400

約数和(自身を除く): 775301392

約数列:

[1, 2, 4, 8, 13, 16, 19, 26, 38, 52, 76, 104, 152, 208, 247, 304, 494, 988, 1976, 3952, 163979, 327958, 655916, 1311832, 2131727, 2623664, 3115601, 4263454, 6231202, 8526908, 12462404, 17053816, 24924808, 34107632, 40502813, 49849616, 81005626, 162011252, 324022504, 648045008]

約数ペア:

[(1, 648045008), (2, 324022504), (4, 162011252), (8, 81005626), (13, 49849616), (16, 40502813), (19, 34107632), (26, 24924808), (38, 17053816), (52, 12462404), (76, 8526908), (104, 6231202), (152, 4263454), (208, 3115601), (247, 2623664), (304, 2131727), (494, 1311832), (988, 655916), (1976, 327958), (3952, 163979)]