21025998

素因数分解:

$2^1\times 3^2\times 7^2\times {\mathrm{31}}^1\times {\mathrm{769}}^1$

素因数の和:822

約数の個数: 72

約数和(自身を含む): 54774720

約数和(自身を除く): 33748722

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 31, 42, 49, 62, 63, 93, 98, 126, 147, 186, 217, 279, 294, 434, 441, 558, 651, 769, 882, 1302, 1519, 1538, 1953, 2307, 3038, 3906, 4557, 4614, 5383, 6921, 9114, 10766, 13671, 13842, 16149, 23839, 27342, 32298, 37681, 47678, 48447, 71517, 75362, 96894, 113043, 143034, 166873, 214551, 226086, 333746, 339129, 429102, 500619, 678258, 1001238, 1168111, 1501857, 2336222, 3003714, 3504333, 7008666, 10512999, 21025998]

約数ペア:

[(1, 21025998), (2, 10512999), (3, 7008666), (6, 3504333), (7, 3003714), (9, 2336222), (14, 1501857), (18, 1168111), (21, 1001238), (31, 678258), (42, 500619), (49, 429102), (62, 339129), (63, 333746), (93, 226086), (98, 214551), (126, 166873), (147, 143034), (186, 113043), (217, 96894), (279, 75362), (294, 71517), (434, 48447), (441, 47678), (558, 37681), (651, 32298), (769, 27342), (882, 23839), (1302, 16149), (1519, 13842), (1538, 13671), (1953, 10766), (2307, 9114), (3038, 6921), (3906, 5383), (4557, 4614)]