19812720016

素因数分解:

$2^4\times {\mathrm{653}}^1\times {\mathrm{1896317}}^1$

素因数の和:1896978

約数の個数: 20

約数和(自身を含む): 38445951132

約数和(自身を除く): 18633231116

約数列:

[1, 2, 4, 8, 16, 653, 1306, 2612, 5224, 10448, 1896317, 3792634, 7585268, 15170536, 30341072, 1238295001, 2476590002, 4953180004, 9906360008, 19812720016]

約数ペア:

[(1, 19812720016), (2, 9906360008), (4, 4953180004), (8, 2476590002), (16, 1238295001), (653, 30341072), (1306, 15170536), (2612, 7585268), (5224, 3792634), (10448, 1896317)]