21386880

素因数分解:

$2^7\times 3^2\times 5^1\times {\mathrm{47}}^1\times {\mathrm{79}}^1$

素因数の和:151

約数の個数: 192

約数和(自身を含む): 76377600

約数和(自身を除く): 54990720

約数列:

[1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 32, 36, 40, 45, 47, 48, 60, 64, 72, 79, 80, 90, 94, 96, 120, 128, 141, 144, 158, 160, 180, 188, 192, 235, 237, 240, 282, 288, 316, 320, 360, 376, 384, 395, 423, 470, 474, 480, 564, 576, 632, 640, 705, 711, 720, 752, 790, 846, 940, 948, 960, 1128, 1152, 1185, 1264, 1410, 1422, 1440, 1504, 1580, 1692, 1880, 1896, 1920, 2115, 2256, 2370, 2528, 2820, 2844, 2880, 3008, 3160, 3384, 3555, 3713, 3760, 3792, 4230, 4512, 4740, 5056, 5640, 5688, 5760, 6016, 6320, 6768, 7110, 7426, 7520, 7584, 8460, 9024, 9480, 10112, 11139, 11280, 11376, 12640, 13536, 14220, 14852, 15040, 15168, 16920, 18048, 18565, 18960, 22278, 22560, 22752, 25280, 27072, 28440, 29704, 30080, 30336, 33417, 33840, 37130, 37920, 44556, 45120, 45504, 50560, 54144, 55695, 56880, 59408, 66834, 67680, 74260, 75840, 89112, 90240, 91008, 111390, 113760, 118816, 133668, 135360, 148520, 151680, 167085, 178224, 222780, 227520, 237632, 267336, 270720, 297040, 334170, 356448, 445560, 455040, 475264, 534672, 594080, 668340, 712896, 891120, 1069344, 1188160, 1336680, 1425792, 1782240, 2138688, 2376320, 2673360, 3564480, 4277376, 5346720, 7128960, 10693440, 21386880]

約数ペア:

[(1, 21386880), (2, 10693440), (3, 7128960), (4, 5346720), (5, 4277376), (6, 3564480), (8, 2673360), (9, 2376320), (10, 2138688), (12, 1782240), (15, 1425792), (16, 1336680), (18, 1188160), (20, 1069344), (24, 891120), (30, 712896), (32, 668340), (36, 594080), (40, 534672), (45, 475264), (47, 455040), (48, 445560), (60, 356448), (64, 334170), (72, 297040), (79, 270720), (80, 267336), (90, 237632), (94, 227520), (96, 222780), (120, 178224), (128, 167085), (141, 151680), (144, 148520), (158, 135360), (160, 133668), (180, 118816), (188, 113760), (192, 111390), (235, 91008), (237, 90240), (240, 89112), (282, 75840), (288, 74260), (316, 67680), (320, 66834), (360, 59408), (376, 56880), (384, 55695), (395, 54144), (423, 50560), (470, 45504), (474, 45120), (480, 44556), (564, 37920), (576, 37130), (632, 33840), (640, 33417), (705, 30336), (711, 30080), (720, 29704), (752, 28440), (790, 27072), (846, 25280), (940, 22752), (948, 22560), (960, 22278), (1128, 18960), (1152, 18565), (1185, 18048), (1264, 16920), (1410, 15168), (1422, 15040), (1440, 14852), (1504, 14220), (1580, 13536), (1692, 12640), (1880, 11376), (1896, 11280), (1920, 11139), (2115, 10112), (2256, 9480), (2370, 9024), (2528, 8460), (2820, 7584), (2844, 7520), (2880, 7426), (3008, 7110), (3160, 6768), (3384, 6320), (3555, 6016), (3713, 5760), (3760, 5688), (3792, 5640), (4230, 5056), (4512, 4740)]