28542780

素因数分解:

$2^2\times 3^5\times 5^1\times 7^1\times {\mathrm{839}}^1$

素因数の和:870

約数の個数: 144

約数和(自身を含む): 102735360

約数和(自身を除く): 74192580

約数列:

[1, 2, 3, 4, 5, 6, 7, 9, 10, 12, 14, 15, 18, 20, 21, 27, 28, 30, 35, 36, 42, 45, 54, 60, 63, 70, 81, 84, 90, 105, 108, 126, 135, 140, 162, 180, 189, 210, 243, 252, 270, 315, 324, 378, 405, 420, 486, 540, 567, 630, 756, 810, 839, 945, 972, 1134, 1215, 1260, 1620, 1678, 1701, 1890, 2268, 2430, 2517, 2835, 3356, 3402, 3780, 4195, 4860, 5034, 5670, 5873, 6804, 7551, 8390, 8505, 10068, 11340, 11746, 12585, 15102, 16780, 17010, 17619, 22653, 23492, 25170, 29365, 30204, 34020, 35238, 37755, 45306, 50340, 52857, 58730, 67959, 70476, 75510, 88095, 90612, 105714, 113265, 117460, 135918, 151020, 158571, 176190, 203877, 211428, 226530, 264285, 271836, 317142, 339795, 352380, 407754, 453060, 475713, 528570, 634284, 679590, 792855, 815508, 951426, 1019385, 1057140, 1359180, 1427139, 1585710, 1902852, 2038770, 2378565, 2854278, 3171420, 4077540, 4757130, 5708556, 7135695, 9514260, 14271390, 28542780]

約数ペア:

[(1, 28542780), (2, 14271390), (3, 9514260), (4, 7135695), (5, 5708556), (6, 4757130), (7, 4077540), (9, 3171420), (10, 2854278), (12, 2378565), (14, 2038770), (15, 1902852), (18, 1585710), (20, 1427139), (21, 1359180), (27, 1057140), (28, 1019385), (30, 951426), (35, 815508), (36, 792855), (42, 679590), (45, 634284), (54, 528570), (60, 475713), (63, 453060), (70, 407754), (81, 352380), (84, 339795), (90, 317142), (105, 271836), (108, 264285), (126, 226530), (135, 211428), (140, 203877), (162, 176190), (180, 158571), (189, 151020), (210, 135918), (243, 117460), (252, 113265), (270, 105714), (315, 90612), (324, 88095), (378, 75510), (405, 70476), (420, 67959), (486, 58730), (540, 52857), (567, 50340), (630, 45306), (756, 37755), (810, 35238), (839, 34020), (945, 30204), (972, 29365), (1134, 25170), (1215, 23492), (1260, 22653), (1620, 17619), (1678, 17010), (1701, 16780), (1890, 15102), (2268, 12585), (2430, 11746), (2517, 11340), (2835, 10068), (3356, 8505), (3402, 8390), (3780, 7551), (4195, 6804), (4860, 5873), (5034, 5670)]