2640456

素因数分解:

$2^3\times 3^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{31}}^1$

素因数の和:76

約数の個数: 144

約数和(自身を含む): 9135360

約数和(自身を除く): 6494904

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 13, 14, 18, 21, 24, 26, 28, 31, 36, 39, 42, 52, 56, 62, 63, 72, 78, 84, 91, 93, 104, 117, 124, 126, 156, 168, 169, 182, 186, 217, 234, 248, 252, 273, 279, 312, 338, 364, 372, 403, 434, 468, 504, 507, 546, 558, 651, 676, 728, 744, 806, 819, 868, 936, 1014, 1092, 1116, 1183, 1209, 1302, 1352, 1521, 1612, 1638, 1736, 1953, 2028, 2184, 2232, 2366, 2418, 2604, 2821, 3042, 3224, 3276, 3549, 3627, 3906, 4056, 4732, 4836, 5208, 5239, 5642, 6084, 6552, 7098, 7254, 7812, 8463, 9464, 9672, 10478, 10647, 11284, 12168, 14196, 14508, 15624, 15717, 16926, 20956, 21294, 22568, 25389, 28392, 29016, 31434, 33852, 36673, 41912, 42588, 47151, 50778, 62868, 67704, 73346, 85176, 94302, 101556, 110019, 125736, 146692, 188604, 203112, 220038, 293384, 330057, 377208, 440076, 660114, 880152, 1320228, 2640456]

約数ペア:

[(1, 2640456), (2, 1320228), (3, 880152), (4, 660114), (6, 440076), (7, 377208), (8, 330057), (9, 293384), (12, 220038), (13, 203112), (14, 188604), (18, 146692), (21, 125736), (24, 110019), (26, 101556), (28, 94302), (31, 85176), (36, 73346), (39, 67704), (42, 62868), (52, 50778), (56, 47151), (62, 42588), (63, 41912), (72, 36673), (78, 33852), (84, 31434), (91, 29016), (93, 28392), (104, 25389), (117, 22568), (124, 21294), (126, 20956), (156, 16926), (168, 15717), (169, 15624), (182, 14508), (186, 14196), (217, 12168), (234, 11284), (248, 10647), (252, 10478), (273, 9672), (279, 9464), (312, 8463), (338, 7812), (364, 7254), (372, 7098), (403, 6552), (434, 6084), (468, 5642), (504, 5239), (507, 5208), (546, 4836), (558, 4732), (651, 4056), (676, 3906), (728, 3627), (744, 3549), (806, 3276), (819, 3224), (868, 3042), (936, 2821), (1014, 2604), (1092, 2418), (1116, 2366), (1183, 2232), (1209, 2184), (1302, 2028), (1352, 1953), (1521, 1736), (1612, 1638)]