721686888

素因数分解:

$2^3\times 3^3\times {\mathrm{13}}^1\times {\mathrm{43}}^2\times {\mathrm{139}}^1$

素因数の和:253

約数の個数: 192

約数和(自身を含む): 2226168000

約数和(自身を除く): 1504481112

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 18, 24, 26, 27, 36, 39, 43, 52, 54, 72, 78, 86, 104, 108, 117, 129, 139, 156, 172, 216, 234, 258, 278, 312, 344, 351, 387, 417, 468, 516, 556, 559, 702, 774, 834, 936, 1032, 1112, 1118, 1161, 1251, 1404, 1548, 1668, 1677, 1807, 1849, 2236, 2322, 2502, 2808, 3096, 3336, 3354, 3614, 3698, 3753, 4472, 4644, 5004, 5031, 5421, 5547, 5977, 6708, 7228, 7396, 7506, 9288, 10008, 10062, 10842, 11094, 11954, 13416, 14456, 14792, 15012, 15093, 16263, 16641, 17931, 20124, 21684, 22188, 23908, 24037, 30024, 30186, 32526, 33282, 35862, 40248, 43368, 44376, 47816, 48074, 48789, 49923, 53793, 60372, 65052, 66564, 71724, 72111, 77701, 96148, 97578, 99846, 107586, 120744, 130104, 133128, 143448, 144222, 155402, 161379, 192296, 195156, 199692, 215172, 216333, 233103, 257011, 288444, 310804, 322758, 390312, 399384, 430344, 432666, 466206, 514022, 576888, 621608, 645516, 648999, 699309, 771033, 865332, 932412, 1028044, 1291032, 1297998, 1398618, 1542066, 1730664, 1864824, 2056088, 2097927, 2313099, 2595996, 2797236, 3084132, 3341143, 4195854, 4626198, 5191992, 5594472, 6168264, 6682286, 6939297, 8391708, 9252396, 10023429, 13364572, 13878594, 16783416, 18504792, 20046858, 26729144, 27757188, 30070287, 40093716, 55514376, 60140574, 80187432, 90210861, 120281148, 180421722, 240562296, 360843444, 721686888]

約数ペア:

[(1, 721686888), (2, 360843444), (3, 240562296), (4, 180421722), (6, 120281148), (8, 90210861), (9, 80187432), (12, 60140574), (13, 55514376), (18, 40093716), (24, 30070287), (26, 27757188), (27, 26729144), (36, 20046858), (39, 18504792), (43, 16783416), (52, 13878594), (54, 13364572), (72, 10023429), (78, 9252396), (86, 8391708), (104, 6939297), (108, 6682286), (117, 6168264), (129, 5594472), (139, 5191992), (156, 4626198), (172, 4195854), (216, 3341143), (234, 3084132), (258, 2797236), (278, 2595996), (312, 2313099), (344, 2097927), (351, 2056088), (387, 1864824), (417, 1730664), (468, 1542066), (516, 1398618), (556, 1297998), (559, 1291032), (702, 1028044), (774, 932412), (834, 865332), (936, 771033), (1032, 699309), (1112, 648999), (1118, 645516), (1161, 621608), (1251, 576888), (1404, 514022), (1548, 466206), (1668, 432666), (1677, 430344), (1807, 399384), (1849, 390312), (2236, 322758), (2322, 310804), (2502, 288444), (2808, 257011), (3096, 233103), (3336, 216333), (3354, 215172), (3614, 199692), (3698, 195156), (3753, 192296), (4472, 161379), (4644, 155402), (5004, 144222), (5031, 143448), (5421, 133128), (5547, 130104), (5977, 120744), (6708, 107586), (7228, 99846), (7396, 97578), (7506, 96148), (9288, 77701), (10008, 72111), (10062, 71724), (10842, 66564), (11094, 65052), (11954, 60372), (13416, 53793), (14456, 49923), (14792, 48789), (15012, 48074), (15093, 47816), (16263, 44376), (16641, 43368), (17931, 40248), (20124, 35862), (21684, 33282), (22188, 32526), (23908, 30186), (24037, 30024)]