1215678828

素因数分解:

$2^2\times 3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{359}}^1\times {\mathrm{443}}^1$

素因数の和:836

約数の個数: 144

約数和(自身を含む): 3571464960

約数和(自身を除く): 2355786132

約数列:

[1, 2, 3, 4, 6, 7, 12, 13, 14, 21, 26, 28, 39, 42, 49, 52, 78, 84, 91, 98, 147, 156, 182, 196, 273, 294, 359, 364, 443, 546, 588, 637, 718, 886, 1077, 1092, 1274, 1329, 1436, 1772, 1911, 2154, 2513, 2548, 2658, 3101, 3822, 4308, 4667, 5026, 5316, 5759, 6202, 7539, 7644, 9303, 9334, 10052, 11518, 12404, 14001, 15078, 17277, 17591, 18606, 18668, 21707, 23036, 28002, 30156, 32669, 34554, 35182, 37212, 40313, 43414, 52773, 56004, 65121, 65338, 69108, 70364, 80626, 86828, 98007, 105546, 120939, 130242, 130676, 159037, 161252, 196014, 211092, 228683, 241878, 260484, 282191, 318074, 392028, 457366, 477111, 483756, 564382, 636148, 686049, 846573, 914732, 954222, 1113259, 1128764, 1372098, 1693146, 1908444, 2067481, 2226518, 2744196, 3339777, 3386292, 4134962, 4453036, 6202443, 6679554, 7792813, 8269924, 12404886, 13359108, 14472367, 15585626, 23378439, 24809772, 28944734, 31171252, 43417101, 46756878, 57889468, 86834202, 93513756, 101306569, 173668404, 202613138, 303919707, 405226276, 607839414, 1215678828]

約数ペア:

[(1, 1215678828), (2, 607839414), (3, 405226276), (4, 303919707), (6, 202613138), (7, 173668404), (12, 101306569), (13, 93513756), (14, 86834202), (21, 57889468), (26, 46756878), (28, 43417101), (39, 31171252), (42, 28944734), (49, 24809772), (52, 23378439), (78, 15585626), (84, 14472367), (91, 13359108), (98, 12404886), (147, 8269924), (156, 7792813), (182, 6679554), (196, 6202443), (273, 4453036), (294, 4134962), (359, 3386292), (364, 3339777), (443, 2744196), (546, 2226518), (588, 2067481), (637, 1908444), (718, 1693146), (886, 1372098), (1077, 1128764), (1092, 1113259), (1274, 954222), (1329, 914732), (1436, 846573), (1772, 686049), (1911, 636148), (2154, 564382), (2513, 483756), (2548, 477111), (2658, 457366), (3101, 392028), (3822, 318074), (4308, 282191), (4667, 260484), (5026, 241878), (5316, 228683), (5759, 211092), (6202, 196014), (7539, 161252), (7644, 159037), (9303, 130676), (9334, 130242), (10052, 120939), (11518, 105546), (12404, 98007), (14001, 86828), (15078, 80626), (17277, 70364), (17591, 69108), (18606, 65338), (18668, 65121), (21707, 56004), (23036, 52773), (28002, 43414), (30156, 40313), (32669, 37212), (34554, 35182)]