21505976

素因数分解:

$2^3\times {\mathrm{41}}^1\times {\mathrm{173}}^1\times {\mathrm{379}}^1$

素因数の和:599

約数の個数: 32

約数和(自身を含む): 41655600

約数和(自身を除く): 20149624

約数列:

[1, 2, 4, 8, 41, 82, 164, 173, 328, 346, 379, 692, 758, 1384, 1516, 3032, 7093, 14186, 15539, 28372, 31078, 56744, 62156, 65567, 124312, 131134, 262268, 524536, 2688247, 5376494, 10752988, 21505976]

約数ペア:

[(1, 21505976), (2, 10752988), (4, 5376494), (8, 2688247), (41, 524536), (82, 262268), (164, 131134), (173, 124312), (328, 65567), (346, 62156), (379, 56744), (692, 31078), (758, 28372), (1384, 15539), (1516, 14186), (3032, 7093)]