21191536

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{69709}}^1$

素因数の和:69736

約数の個数: 20

約数和(自身を含む): 43220200

約数和(自身を除く): 22028664

約数列:

[1, 2, 4, 8, 16, 19, 38, 76, 152, 304, 69709, 139418, 278836, 557672, 1115344, 1324471, 2648942, 5297884, 10595768, 21191536]

約数ペア:

[(1, 21191536), (2, 10595768), (4, 5297884), (8, 2648942), (16, 1324471), (19, 1115344), (38, 557672), (76, 278836), (152, 139418), (304, 69709)]