21868080

素因数分解:

$2^4\times 3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{163}}^1$

素因数の和:235

約数の個数: 160

約数和(自身を含む): 75161856

約数和(自身を除く): 53293776

約数列:

[1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 16, 20, 24, 26, 30, 39, 40, 43, 48, 52, 60, 65, 78, 80, 86, 104, 120, 129, 130, 156, 163, 172, 195, 208, 215, 240, 258, 260, 312, 326, 344, 390, 430, 489, 516, 520, 559, 624, 645, 652, 688, 780, 815, 860, 978, 1032, 1040, 1118, 1290, 1304, 1560, 1630, 1677, 1720, 1956, 2064, 2119, 2236, 2445, 2580, 2608, 2795, 3120, 3260, 3354, 3440, 3912, 4238, 4472, 4890, 5160, 5590, 6357, 6520, 6708, 7009, 7824, 8385, 8476, 8944, 9780, 10320, 10595, 11180, 12714, 13040, 13416, 14018, 16770, 16952, 19560, 21027, 21190, 22360, 25428, 26832, 28036, 31785, 33540, 33904, 35045, 39120, 42054, 42380, 44720, 50856, 56072, 63570, 67080, 70090, 84108, 84760, 91117, 101712, 105135, 112144, 127140, 134160, 140180, 168216, 169520, 182234, 210270, 254280, 273351, 280360, 336432, 364468, 420540, 455585, 508560, 546702, 560720, 728936, 841080, 911170, 1093404, 1366755, 1457872, 1682160, 1822340, 2186808, 2733510, 3644680, 4373616, 5467020, 7289360, 10934040, 21868080]

約数ペア:

[(1, 21868080), (2, 10934040), (3, 7289360), (4, 5467020), (5, 4373616), (6, 3644680), (8, 2733510), (10, 2186808), (12, 1822340), (13, 1682160), (15, 1457872), (16, 1366755), (20, 1093404), (24, 911170), (26, 841080), (30, 728936), (39, 560720), (40, 546702), (43, 508560), (48, 455585), (52, 420540), (60, 364468), (65, 336432), (78, 280360), (80, 273351), (86, 254280), (104, 210270), (120, 182234), (129, 169520), (130, 168216), (156, 140180), (163, 134160), (172, 127140), (195, 112144), (208, 105135), (215, 101712), (240, 91117), (258, 84760), (260, 84108), (312, 70090), (326, 67080), (344, 63570), (390, 56072), (430, 50856), (489, 44720), (516, 42380), (520, 42054), (559, 39120), (624, 35045), (645, 33904), (652, 33540), (688, 31785), (780, 28036), (815, 26832), (860, 25428), (978, 22360), (1032, 21190), (1040, 21027), (1118, 19560), (1290, 16952), (1304, 16770), (1560, 14018), (1630, 13416), (1677, 13040), (1720, 12714), (1956, 11180), (2064, 10595), (2119, 10320), (2236, 9780), (2445, 8944), (2580, 8476), (2608, 8385), (2795, 7824), (3120, 7009), (3260, 6708), (3354, 6520), (3440, 6357), (3912, 5590), (4238, 5160), (4472, 4890)]