21999040

素因数分解:

$2^6\times 5^1\times 7^2\times {\mathrm{23}}^1\times {\mathrm{61}}^1$

素因数の和:115

約数の個数: 168

約数和(自身を含む): 64629792

約数和(自身を除く): 42630752

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 23, 28, 32, 35, 40, 46, 49, 56, 61, 64, 70, 80, 92, 98, 112, 115, 122, 140, 160, 161, 184, 196, 224, 230, 244, 245, 280, 305, 320, 322, 368, 392, 427, 448, 460, 488, 490, 560, 610, 644, 736, 784, 805, 854, 920, 976, 980, 1120, 1127, 1220, 1288, 1403, 1472, 1568, 1610, 1708, 1840, 1952, 1960, 2135, 2240, 2254, 2440, 2576, 2806, 2989, 3136, 3220, 3416, 3680, 3904, 3920, 4270, 4508, 4880, 5152, 5612, 5635, 5978, 6440, 6832, 7015, 7360, 7840, 8540, 9016, 9760, 9821, 10304, 11224, 11270, 11956, 12880, 13664, 14030, 14945, 15680, 17080, 18032, 19520, 19642, 22448, 22540, 23912, 25760, 27328, 28060, 29890, 34160, 36064, 39284, 44896, 45080, 47824, 49105, 51520, 56120, 59780, 68320, 68747, 72128, 78568, 89792, 90160, 95648, 98210, 112240, 119560, 136640, 137494, 157136, 180320, 191296, 196420, 224480, 239120, 274988, 314272, 343735, 360640, 392840, 448960, 478240, 549976, 628544, 687470, 785680, 956480, 1099952, 1374940, 1571360, 2199904, 2749880, 3142720, 4399808, 5499760, 10999520, 21999040]

約数ペア:

[(1, 21999040), (2, 10999520), (4, 5499760), (5, 4399808), (7, 3142720), (8, 2749880), (10, 2199904), (14, 1571360), (16, 1374940), (20, 1099952), (23, 956480), (28, 785680), (32, 687470), (35, 628544), (40, 549976), (46, 478240), (49, 448960), (56, 392840), (61, 360640), (64, 343735), (70, 314272), (80, 274988), (92, 239120), (98, 224480), (112, 196420), (115, 191296), (122, 180320), (140, 157136), (160, 137494), (161, 136640), (184, 119560), (196, 112240), (224, 98210), (230, 95648), (244, 90160), (245, 89792), (280, 78568), (305, 72128), (320, 68747), (322, 68320), (368, 59780), (392, 56120), (427, 51520), (448, 49105), (460, 47824), (488, 45080), (490, 44896), (560, 39284), (610, 36064), (644, 34160), (736, 29890), (784, 28060), (805, 27328), (854, 25760), (920, 23912), (976, 22540), (980, 22448), (1120, 19642), (1127, 19520), (1220, 18032), (1288, 17080), (1403, 15680), (1472, 14945), (1568, 14030), (1610, 13664), (1708, 12880), (1840, 11956), (1952, 11270), (1960, 11224), (2135, 10304), (2240, 9821), (2254, 9760), (2440, 9016), (2576, 8540), (2806, 7840), (2989, 7360), (3136, 7015), (3220, 6832), (3416, 6440), (3680, 5978), (3904, 5635), (3920, 5612), (4270, 5152), (4508, 4880)]