20992608

素因数分解:

$2^5\times 3^4\times 7^1\times {\mathrm{13}}^1\times {\mathrm{89}}^1$

素因数の和:131

約数の個数: 240

約数和(自身を含む): 76839840

約数和(自身を除く): 55847232

約数列:

[1, 2, 3, 4, 6, 7, 8, 9, 12, 13, 14, 16, 18, 21, 24, 26, 27, 28, 32, 36, 39, 42, 48, 52, 54, 56, 63, 72, 78, 81, 84, 89, 91, 96, 104, 108, 112, 117, 126, 144, 156, 162, 168, 178, 182, 189, 208, 216, 224, 234, 252, 267, 273, 288, 312, 324, 336, 351, 356, 364, 378, 416, 432, 468, 504, 534, 546, 567, 623, 624, 648, 672, 702, 712, 728, 756, 801, 819, 864, 936, 1008, 1053, 1068, 1092, 1134, 1157, 1246, 1248, 1296, 1404, 1424, 1456, 1512, 1602, 1638, 1869, 1872, 2016, 2106, 2136, 2184, 2268, 2314, 2403, 2457, 2492, 2592, 2808, 2848, 2912, 3024, 3204, 3276, 3471, 3738, 3744, 4212, 4272, 4368, 4536, 4628, 4806, 4914, 4984, 5607, 5616, 6048, 6408, 6552, 6942, 7209, 7371, 7476, 8099, 8424, 8544, 8736, 9072, 9256, 9612, 9828, 9968, 10413, 11214, 11232, 12816, 13104, 13884, 14418, 14742, 14952, 16198, 16821, 16848, 18144, 18512, 19224, 19656, 19936, 20826, 22428, 24297, 25632, 26208, 27768, 28836, 29484, 29904, 31239, 32396, 33642, 33696, 37024, 38448, 39312, 41652, 44856, 48594, 50463, 55536, 57672, 58968, 59808, 62478, 64792, 67284, 72891, 76896, 78624, 83304, 89712, 93717, 97188, 100926, 111072, 115344, 117936, 124956, 129584, 134568, 145782, 166608, 179424, 187434, 194376, 201852, 218673, 230688, 235872, 249912, 259168, 269136, 291564, 333216, 374868, 388752, 403704, 437346, 499824, 538272, 583128, 656019, 749736, 777504, 807408, 874692, 999648, 1166256, 1312038, 1499472, 1614816, 1749384, 2332512, 2624076, 2998944, 3498768, 5248152, 6997536, 10496304, 20992608]

約数ペア:

[(1, 20992608), (2, 10496304), (3, 6997536), (4, 5248152), (6, 3498768), (7, 2998944), (8, 2624076), (9, 2332512), (12, 1749384), (13, 1614816), (14, 1499472), (16, 1312038), (18, 1166256), (21, 999648), (24, 874692), (26, 807408), (27, 777504), (28, 749736), (32, 656019), (36, 583128), (39, 538272), (42, 499824), (48, 437346), (52, 403704), (54, 388752), (56, 374868), (63, 333216), (72, 291564), (78, 269136), (81, 259168), (84, 249912), (89, 235872), (91, 230688), (96, 218673), (104, 201852), (108, 194376), (112, 187434), (117, 179424), (126, 166608), (144, 145782), (156, 134568), (162, 129584), (168, 124956), (178, 117936), (182, 115344), (189, 111072), (208, 100926), (216, 97188), (224, 93717), (234, 89712), (252, 83304), (267, 78624), (273, 76896), (288, 72891), (312, 67284), (324, 64792), (336, 62478), (351, 59808), (356, 58968), (364, 57672), (378, 55536), (416, 50463), (432, 48594), (468, 44856), (504, 41652), (534, 39312), (546, 38448), (567, 37024), (623, 33696), (624, 33642), (648, 32396), (672, 31239), (702, 29904), (712, 29484), (728, 28836), (756, 27768), (801, 26208), (819, 25632), (864, 24297), (936, 22428), (1008, 20826), (1053, 19936), (1068, 19656), (1092, 19224), (1134, 18512), (1157, 18144), (1246, 16848), (1248, 16821), (1296, 16198), (1404, 14952), (1424, 14742), (1456, 14418), (1512, 13884), (1602, 13104), (1638, 12816), (1869, 11232), (1872, 11214), (2016, 10413), (2106, 9968), (2136, 9828), (2184, 9612), (2268, 9256), (2314, 9072), (2403, 8736), (2457, 8544), (2492, 8424), (2592, 8099), (2808, 7476), (2848, 7371), (2912, 7209), (3024, 6942), (3204, 6552), (3276, 6408), (3471, 6048), (3738, 5616), (3744, 5607), (4212, 4984), (4272, 4914), (4368, 4806), (4536, 4628)]