21135976

素因数分解:

$2^3\times {\mathrm{53}}^1\times {\mathrm{79}}^1\times {\mathrm{631}}^1$

素因数の和:769

約数の個数: 32

約数和(自身を含む): 40953600

約数和(自身を除く): 19817624

約数列:

[1, 2, 4, 8, 53, 79, 106, 158, 212, 316, 424, 631, 632, 1262, 2524, 4187, 5048, 8374, 16748, 33443, 33496, 49849, 66886, 99698, 133772, 199396, 267544, 398792, 2641997, 5283994, 10567988, 21135976]

約数ペア:

[(1, 21135976), (2, 10567988), (4, 5283994), (8, 2641997), (53, 398792), (79, 267544), (106, 199396), (158, 133772), (212, 99698), (316, 66886), (424, 49849), (631, 33496), (632, 33443), (1262, 16748), (2524, 8374), (4187, 5048)]