21365760

素因数分解:

$2^{10}\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{107}}^1$

素因数の和:148

約数の個数: 176

約数和(自身を含む): 74281536

約数和(自身を除く): 52915776

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 32, 39, 40, 48, 52, 60, 64, 65, 78, 80, 96, 104, 107, 120, 128, 130, 156, 160, 192, 195, 208, 214, 240, 256, 260, 312, 320, 321, 384, 390, 416, 428, 480, 512, 520, 535, 624, 640, 642, 768, 780, 832, 856, 960, 1024, 1040, 1070, 1248, 1280, 1284, 1391, 1536, 1560, 1605, 1664, 1712, 1920, 2080, 2140, 2496, 2560, 2568, 2782, 3072, 3120, 3210, 3328, 3424, 3840, 4160, 4173, 4280, 4992, 5120, 5136, 5564, 6240, 6420, 6656, 6848, 6955, 7680, 8320, 8346, 8560, 9984, 10272, 11128, 12480, 12840, 13312, 13696, 13910, 15360, 16640, 16692, 17120, 19968, 20544, 20865, 22256, 24960, 25680, 27392, 27820, 33280, 33384, 34240, 39936, 41088, 41730, 44512, 49920, 51360, 54784, 55640, 66560, 66768, 68480, 82176, 83460, 89024, 99840, 102720, 109568, 111280, 133536, 136960, 164352, 166920, 178048, 199680, 205440, 222560, 267072, 273920, 328704, 333840, 356096, 410880, 445120, 534144, 547840, 667680, 712192, 821760, 890240, 1068288, 1335360, 1424384, 1643520, 1780480, 2136576, 2670720, 3560960, 4273152, 5341440, 7121920, 10682880, 21365760]

約数ペア:

[(1, 21365760), (2, 10682880), (3, 7121920), (4, 5341440), (5, 4273152), (6, 3560960), (8, 2670720), (10, 2136576), (12, 1780480), (13, 1643520), (15, 1424384), (16, 1335360), (20, 1068288), (24, 890240), (26, 821760), (30, 712192), (32, 667680), (39, 547840), (40, 534144), (48, 445120), (52, 410880), (60, 356096), (64, 333840), (65, 328704), (78, 273920), (80, 267072), (96, 222560), (104, 205440), (107, 199680), (120, 178048), (128, 166920), (130, 164352), (156, 136960), (160, 133536), (192, 111280), (195, 109568), (208, 102720), (214, 99840), (240, 89024), (256, 83460), (260, 82176), (312, 68480), (320, 66768), (321, 66560), (384, 55640), (390, 54784), (416, 51360), (428, 49920), (480, 44512), (512, 41730), (520, 41088), (535, 39936), (624, 34240), (640, 33384), (642, 33280), (768, 27820), (780, 27392), (832, 25680), (856, 24960), (960, 22256), (1024, 20865), (1040, 20544), (1070, 19968), (1248, 17120), (1280, 16692), (1284, 16640), (1391, 15360), (1536, 13910), (1560, 13696), (1605, 13312), (1664, 12840), (1712, 12480), (1920, 11128), (2080, 10272), (2140, 9984), (2496, 8560), (2560, 8346), (2568, 8320), (2782, 7680), (3072, 6955), (3120, 6848), (3210, 6656), (3328, 6420), (3424, 6240), (3840, 5564), (4160, 5136), (4173, 5120), (4280, 4992)]