21480736

素因数分解:

$2^5\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{233}}^1$

素因数の和:353

約数の個数: 48

約数和(自身を含む): 44108064

約数和(自身を除く): 22627328

約数列:

[1, 2, 4, 8, 16, 32, 43, 67, 86, 134, 172, 233, 268, 344, 466, 536, 688, 932, 1072, 1376, 1864, 2144, 2881, 3728, 5762, 7456, 10019, 11524, 15611, 20038, 23048, 31222, 40076, 46096, 62444, 80152, 92192, 124888, 160304, 249776, 320608, 499552, 671273, 1342546, 2685092, 5370184, 10740368, 21480736]

約数ペア:

[(1, 21480736), (2, 10740368), (4, 5370184), (8, 2685092), (16, 1342546), (32, 671273), (43, 499552), (67, 320608), (86, 249776), (134, 160304), (172, 124888), (233, 92192), (268, 80152), (344, 62444), (466, 46096), (536, 40076), (688, 31222), (932, 23048), (1072, 20038), (1376, 15611), (1864, 11524), (2144, 10019), (2881, 7456), (3728, 5762)]