19938828

素因数分解:

$2^2\times 3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{31}}^2$

素因数の和:108

約数の個数: 144

約数和(自身を含む): 62280960

約数和(自身を除く): 42342132

約数列:

[1, 2, 3, 4, 6, 7, 12, 13, 14, 19, 21, 26, 28, 31, 38, 39, 42, 52, 57, 62, 76, 78, 84, 91, 93, 114, 124, 133, 156, 182, 186, 217, 228, 247, 266, 273, 364, 372, 399, 403, 434, 494, 532, 546, 589, 651, 741, 798, 806, 868, 961, 988, 1092, 1178, 1209, 1302, 1482, 1596, 1612, 1729, 1767, 1922, 2356, 2418, 2604, 2821, 2883, 2964, 3458, 3534, 3844, 4123, 4836, 5187, 5642, 5766, 6727, 6916, 7068, 7657, 8246, 8463, 10374, 11284, 11532, 12369, 12493, 13454, 15314, 16492, 16926, 18259, 20181, 20748, 22971, 24738, 24986, 26908, 30628, 33852, 36518, 37479, 40362, 45942, 49476, 49972, 53599, 54777, 73036, 74958, 80724, 87451, 91884, 107198, 109554, 127813, 149916, 160797, 174902, 214396, 219108, 237367, 255626, 262353, 321594, 349804, 383439, 474734, 511252, 524706, 643188, 712101, 766878, 949468, 1049412, 1424202, 1533756, 1661569, 2848404, 3323138, 4984707, 6646276, 9969414, 19938828]

約数ペア:

[(1, 19938828), (2, 9969414), (3, 6646276), (4, 4984707), (6, 3323138), (7, 2848404), (12, 1661569), (13, 1533756), (14, 1424202), (19, 1049412), (21, 949468), (26, 766878), (28, 712101), (31, 643188), (38, 524706), (39, 511252), (42, 474734), (52, 383439), (57, 349804), (62, 321594), (76, 262353), (78, 255626), (84, 237367), (91, 219108), (93, 214396), (114, 174902), (124, 160797), (133, 149916), (156, 127813), (182, 109554), (186, 107198), (217, 91884), (228, 87451), (247, 80724), (266, 74958), (273, 73036), (364, 54777), (372, 53599), (399, 49972), (403, 49476), (434, 45942), (494, 40362), (532, 37479), (546, 36518), (589, 33852), (651, 30628), (741, 26908), (798, 24986), (806, 24738), (868, 22971), (961, 20748), (988, 20181), (1092, 18259), (1178, 16926), (1209, 16492), (1302, 15314), (1482, 13454), (1596, 12493), (1612, 12369), (1729, 11532), (1767, 11284), (1922, 10374), (2356, 8463), (2418, 8246), (2604, 7657), (2821, 7068), (2883, 6916), (2964, 6727), (3458, 5766), (3534, 5642), (3844, 5187), (4123, 4836)]