19989324

素因数分解:

$2^2\times 3^2\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{349}}^1$

素因数の和:439

約数の個数: 72

約数和(自身を含む): 53253200

約数和(自身を除く): 33263876

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 37, 43, 74, 86, 111, 129, 148, 172, 222, 258, 333, 349, 387, 444, 516, 666, 698, 774, 1047, 1332, 1396, 1548, 1591, 2094, 3141, 3182, 4188, 4773, 6282, 6364, 9546, 12564, 12913, 14319, 15007, 19092, 25826, 28638, 30014, 38739, 45021, 51652, 57276, 60028, 77478, 90042, 116217, 135063, 154956, 180084, 232434, 270126, 464868, 540252, 555259, 1110518, 1665777, 2221036, 3331554, 4997331, 6663108, 9994662, 19989324]

約数ペア:

[(1, 19989324), (2, 9994662), (3, 6663108), (4, 4997331), (6, 3331554), (9, 2221036), (12, 1665777), (18, 1110518), (36, 555259), (37, 540252), (43, 464868), (74, 270126), (86, 232434), (111, 180084), (129, 154956), (148, 135063), (172, 116217), (222, 90042), (258, 77478), (333, 60028), (349, 57276), (387, 51652), (444, 45021), (516, 38739), (666, 30014), (698, 28638), (774, 25826), (1047, 19092), (1332, 15007), (1396, 14319), (1548, 12913), (1591, 12564), (2094, 9546), (3141, 6364), (3182, 6282), (4188, 4773)]