21280911248

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{42905063}}^1$

素因数の和:42905102

約数の個数: 20

約数和(自身を含む): 42561823488

約数和(自身を除く): 21280912240

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 42905063, 85810126, 171620252, 343240504, 686481008, 1330056953, 2660113906, 5320227812, 10640455624, 21280911248]

約数ペア:

[(1, 21280911248), (2, 10640455624), (4, 5320227812), (8, 2660113906), (16, 1330056953), (31, 686481008), (62, 343240504), (124, 171620252), (248, 85810126), (496, 42905063)]