21000978333

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{211}}^1\times {\mathrm{257}}^1\times {\mathrm{1163}}^1$

素因数の和:1674

約数の個数: 48

約数和(自身を含む): 31451075136

約数和(自身を除く): 10450096803

約数列:

[1, 3, 9, 37, 111, 211, 257, 333, 633, 771, 1163, 1899, 2313, 3489, 7807, 9509, 10467, 23421, 28527, 43031, 54227, 70263, 85581, 129093, 162681, 245393, 298891, 387279, 488043, 736179, 896673, 2006399, 2208537, 2690019, 6019197, 9079541, 11058967, 18057591, 27238623, 33176901, 63066001, 81715869, 99530703, 189198003, 567594009, 2333442037, 7000326111, 21000978333]

約数ペア:

[(1, 21000978333), (3, 7000326111), (9, 2333442037), (37, 567594009), (111, 189198003), (211, 99530703), (257, 81715869), (333, 63066001), (633, 33176901), (771, 27238623), (1163, 18057591), (1899, 11058967), (2313, 9079541), (3489, 6019197), (7807, 2690019), (9509, 2208537), (10467, 2006399), (23421, 896673), (28527, 736179), (43031, 488043), (54227, 387279), (70263, 298891), (85581, 245393), (129093, 162681)]