21406560

素因数分解:

$2^5\times 3^1\times 5^1\times 7^1\times {\mathrm{23}}^1\times {\mathrm{277}}^1$

素因数の和:325

約数の個数: 192

約数和(自身を含む): 80704512

約数和(自身を除く): 59297952

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 23, 24, 28, 30, 32, 35, 40, 42, 46, 48, 56, 60, 69, 70, 80, 84, 92, 96, 105, 112, 115, 120, 138, 140, 160, 161, 168, 184, 210, 224, 230, 240, 276, 277, 280, 322, 336, 345, 368, 420, 460, 480, 483, 552, 554, 560, 644, 672, 690, 736, 805, 831, 840, 920, 966, 1104, 1108, 1120, 1288, 1380, 1385, 1610, 1662, 1680, 1840, 1932, 1939, 2208, 2216, 2415, 2576, 2760, 2770, 3220, 3324, 3360, 3680, 3864, 3878, 4155, 4432, 4830, 5152, 5520, 5540, 5817, 6371, 6440, 6648, 7728, 7756, 8310, 8864, 9660, 9695, 11040, 11080, 11634, 12742, 12880, 13296, 15456, 15512, 16620, 19113, 19320, 19390, 22160, 23268, 25484, 25760, 26592, 29085, 31024, 31855, 33240, 38226, 38640, 38780, 44320, 44597, 46536, 50968, 58170, 62048, 63710, 66480, 76452, 77280, 77560, 89194, 93072, 95565, 101936, 116340, 127420, 132960, 133791, 152904, 155120, 178388, 186144, 191130, 203872, 222985, 232680, 254840, 267582, 305808, 310240, 356776, 382260, 445970, 465360, 509680, 535164, 611616, 668955, 713552, 764520, 891940, 930720, 1019360, 1070328, 1337910, 1427104, 1529040, 1783880, 2140656, 2675820, 3058080, 3567760, 4281312, 5351640, 7135520, 10703280, 21406560]

約数ペア:

[(1, 21406560), (2, 10703280), (3, 7135520), (4, 5351640), (5, 4281312), (6, 3567760), (7, 3058080), (8, 2675820), (10, 2140656), (12, 1783880), (14, 1529040), (15, 1427104), (16, 1337910), (20, 1070328), (21, 1019360), (23, 930720), (24, 891940), (28, 764520), (30, 713552), (32, 668955), (35, 611616), (40, 535164), (42, 509680), (46, 465360), (48, 445970), (56, 382260), (60, 356776), (69, 310240), (70, 305808), (80, 267582), (84, 254840), (92, 232680), (96, 222985), (105, 203872), (112, 191130), (115, 186144), (120, 178388), (138, 155120), (140, 152904), (160, 133791), (161, 132960), (168, 127420), (184, 116340), (210, 101936), (224, 95565), (230, 93072), (240, 89194), (276, 77560), (277, 77280), (280, 76452), (322, 66480), (336, 63710), (345, 62048), (368, 58170), (420, 50968), (460, 46536), (480, 44597), (483, 44320), (552, 38780), (554, 38640), (560, 38226), (644, 33240), (672, 31855), (690, 31024), (736, 29085), (805, 26592), (831, 25760), (840, 25484), (920, 23268), (966, 22160), (1104, 19390), (1108, 19320), (1120, 19113), (1288, 16620), (1380, 15512), (1385, 15456), (1610, 13296), (1662, 12880), (1680, 12742), (1840, 11634), (1932, 11080), (1939, 11040), (2208, 9695), (2216, 9660), (2415, 8864), (2576, 8310), (2760, 7756), (2770, 7728), (3220, 6648), (3324, 6440), (3360, 6371), (3680, 5817), (3864, 5540), (3878, 5520), (4155, 5152), (4432, 4830)]