21787164

素因数分解:

$2^2\times 3^3\times 7^2\times {\mathrm{23}}^1\times {\mathrm{179}}^1$

素因数の和:229

約数の個数: 144

約数和(自身を含む): 68947200

約数和(自身を除く): 47160036

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 23, 27, 28, 36, 42, 46, 49, 54, 63, 69, 84, 92, 98, 108, 126, 138, 147, 161, 179, 189, 196, 207, 252, 276, 294, 322, 358, 378, 414, 441, 483, 537, 588, 621, 644, 716, 756, 828, 882, 966, 1074, 1127, 1242, 1253, 1323, 1449, 1611, 1764, 1932, 2148, 2254, 2484, 2506, 2646, 2898, 3222, 3381, 3759, 4117, 4347, 4508, 4833, 5012, 5292, 5796, 6444, 6762, 7518, 8234, 8694, 8771, 9666, 10143, 11277, 12351, 13524, 15036, 16468, 17388, 17542, 19332, 20286, 22554, 24702, 26313, 28819, 30429, 33831, 35084, 37053, 40572, 45108, 49404, 52626, 57638, 60858, 67662, 74106, 78939, 86457, 105252, 111159, 115276, 121716, 135324, 148212, 157878, 172914, 201733, 222318, 236817, 259371, 315756, 345828, 403466, 444636, 473634, 518742, 605199, 778113, 806932, 947268, 1037484, 1210398, 1556226, 1815597, 2420796, 3112452, 3631194, 5446791, 7262388, 10893582, 21787164]

約数ペア:

[(1, 21787164), (2, 10893582), (3, 7262388), (4, 5446791), (6, 3631194), (7, 3112452), (9, 2420796), (12, 1815597), (14, 1556226), (18, 1210398), (21, 1037484), (23, 947268), (27, 806932), (28, 778113), (36, 605199), (42, 518742), (46, 473634), (49, 444636), (54, 403466), (63, 345828), (69, 315756), (84, 259371), (92, 236817), (98, 222318), (108, 201733), (126, 172914), (138, 157878), (147, 148212), (161, 135324), (179, 121716), (189, 115276), (196, 111159), (207, 105252), (252, 86457), (276, 78939), (294, 74106), (322, 67662), (358, 60858), (378, 57638), (414, 52626), (441, 49404), (483, 45108), (537, 40572), (588, 37053), (621, 35084), (644, 33831), (716, 30429), (756, 28819), (828, 26313), (882, 24702), (966, 22554), (1074, 20286), (1127, 19332), (1242, 17542), (1253, 17388), (1323, 16468), (1449, 15036), (1611, 13524), (1764, 12351), (1932, 11277), (2148, 10143), (2254, 9666), (2484, 8771), (2506, 8694), (2646, 8234), (2898, 7518), (3222, 6762), (3381, 6444), (3759, 5796), (4117, 5292), (4347, 5012), (4508, 4833)]