20131121488

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{3581}}^1\times {\mathrm{8171}}^1$

素因数の和:11803

約数の個数: 40

約数和(自身を含む): 39927149856

約数和(自身を除く): 19796028368

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 3581, 7162, 8171, 14324, 16342, 28648, 32684, 57296, 65368, 130736, 153983, 307966, 351353, 615932, 702706, 1231864, 1405412, 2463728, 2810824, 5621648, 29260351, 58520702, 117041404, 234082808, 468165616, 1258195093, 2516390186, 5032780372, 10065560744, 20131121488]

約数ペア:

[(1, 20131121488), (2, 10065560744), (4, 5032780372), (8, 2516390186), (16, 1258195093), (43, 468165616), (86, 234082808), (172, 117041404), (344, 58520702), (688, 29260351), (3581, 5621648), (7162, 2810824), (8171, 2463728), (14324, 1405412), (16342, 1231864), (28648, 702706), (32684, 615932), (57296, 351353), (65368, 307966), (130736, 153983)]