251017137

素因数分解:

$3^4\times 7^1\times {\mathrm{31}}^1\times {\mathrm{14281}}^1$

素因数の和:14331

約数の個数: 40

約数和(自身を含む): 442399232

約数和(自身を除く): 191382095

約数列:

[1, 3, 7, 9, 21, 27, 31, 63, 81, 93, 189, 217, 279, 567, 651, 837, 1953, 2511, 5859, 14281, 17577, 42843, 99967, 128529, 299901, 385587, 442711, 899703, 1156761, 1328133, 2699109, 3098977, 3984399, 8097327, 9296931, 11953197, 27890793, 35859591, 83672379, 251017137]

約数ペア:

[(1, 251017137), (3, 83672379), (7, 35859591), (9, 27890793), (21, 11953197), (27, 9296931), (31, 8097327), (63, 3984399), (81, 3098977), (93, 2699109), (189, 1328133), (217, 1156761), (279, 899703), (567, 442711), (651, 385587), (837, 299901), (1953, 128529), (2511, 99967), (5859, 42843), (14281, 17577)]