21110320

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{149}}^1$

素因数の和:203

約数の個数: 160

約数和(自身を含む): 64281600

約数和(自身を除く): 43171280

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 16, 20, 22, 23, 28, 35, 40, 44, 46, 55, 56, 70, 77, 80, 88, 92, 110, 112, 115, 140, 149, 154, 161, 176, 184, 220, 230, 253, 280, 298, 308, 322, 368, 385, 440, 460, 506, 560, 596, 616, 644, 745, 770, 805, 880, 920, 1012, 1043, 1192, 1232, 1265, 1288, 1490, 1540, 1610, 1639, 1771, 1840, 2024, 2086, 2384, 2530, 2576, 2980, 3080, 3220, 3278, 3427, 3542, 4048, 4172, 5060, 5215, 5960, 6160, 6440, 6556, 6854, 7084, 8195, 8344, 8855, 10120, 10430, 11473, 11920, 12880, 13112, 13708, 14168, 16390, 16688, 17135, 17710, 20240, 20860, 22946, 23989, 26224, 27416, 28336, 32780, 34270, 35420, 37697, 41720, 45892, 47978, 54832, 57365, 65560, 68540, 70840, 75394, 83440, 91784, 95956, 114730, 119945, 131120, 137080, 141680, 150788, 183568, 188485, 191912, 229460, 239890, 263879, 274160, 301576, 376970, 383824, 458920, 479780, 527758, 603152, 753940, 917840, 959560, 1055516, 1319395, 1507880, 1919120, 2111032, 2638790, 3015760, 4222064, 5277580, 10555160, 21110320]

約数ペア:

[(1, 21110320), (2, 10555160), (4, 5277580), (5, 4222064), (7, 3015760), (8, 2638790), (10, 2111032), (11, 1919120), (14, 1507880), (16, 1319395), (20, 1055516), (22, 959560), (23, 917840), (28, 753940), (35, 603152), (40, 527758), (44, 479780), (46, 458920), (55, 383824), (56, 376970), (70, 301576), (77, 274160), (80, 263879), (88, 239890), (92, 229460), (110, 191912), (112, 188485), (115, 183568), (140, 150788), (149, 141680), (154, 137080), (161, 131120), (176, 119945), (184, 114730), (220, 95956), (230, 91784), (253, 83440), (280, 75394), (298, 70840), (308, 68540), (322, 65560), (368, 57365), (385, 54832), (440, 47978), (460, 45892), (506, 41720), (560, 37697), (596, 35420), (616, 34270), (644, 32780), (745, 28336), (770, 27416), (805, 26224), (880, 23989), (920, 22946), (1012, 20860), (1043, 20240), (1192, 17710), (1232, 17135), (1265, 16688), (1288, 16390), (1490, 14168), (1540, 13708), (1610, 13112), (1639, 12880), (1771, 11920), (1840, 11473), (2024, 10430), (2086, 10120), (2384, 8855), (2530, 8344), (2576, 8195), (2980, 7084), (3080, 6854), (3220, 6556), (3278, 6440), (3427, 6160), (3542, 5960), (4048, 5215), (4172, 5060)]