21000927276

素因数分解:

$2^2\times 3^2\times 7^1\times {\mathrm{157}}^1\times {\mathrm{281}}^1\times {\mathrm{1889}}^1$

素因数の和:2344

約数の個数: 144

約数和(自身を含む): 61305491520

約数和(自身を除く): 40304564244

約数列:

[1, 2, 3, 4, 6, 7, 9, 12, 14, 18, 21, 28, 36, 42, 63, 84, 126, 157, 252, 281, 314, 471, 562, 628, 843, 942, 1099, 1124, 1413, 1686, 1884, 1889, 1967, 2198, 2529, 2826, 3297, 3372, 3778, 3934, 4396, 5058, 5652, 5667, 5901, 6594, 7556, 7868, 9891, 10116, 11334, 11802, 13188, 13223, 17001, 17703, 19782, 22668, 23604, 26446, 34002, 35406, 39564, 39669, 44117, 52892, 68004, 70812, 79338, 88234, 119007, 132351, 158676, 176468, 238014, 264702, 296573, 308819, 397053, 476028, 529404, 530809, 593146, 617638, 794106, 889719, 926457, 1061618, 1186292, 1235276, 1588212, 1592427, 1779438, 1852914, 2076011, 2123236, 2669157, 2779371, 3184854, 3558876, 3705828, 3715663, 4152022, 4777281, 5338314, 5558742, 6228033, 6369708, 7431326, 8304044, 9554562, 10676628, 11117484, 11146989, 12456066, 14862652, 18684099, 19109124, 22293978, 24912132, 33440967, 37368198, 44587956, 66881934, 74736396, 83337013, 133763868, 166674026, 250011039, 333348052, 500022078, 583359091, 750033117, 1000044156, 1166718182, 1500066234, 1750077273, 2333436364, 3000132468, 3500154546, 5250231819, 7000309092, 10500463638, 21000927276]

約数ペア:

[(1, 21000927276), (2, 10500463638), (3, 7000309092), (4, 5250231819), (6, 3500154546), (7, 3000132468), (9, 2333436364), (12, 1750077273), (14, 1500066234), (18, 1166718182), (21, 1000044156), (28, 750033117), (36, 583359091), (42, 500022078), (63, 333348052), (84, 250011039), (126, 166674026), (157, 133763868), (252, 83337013), (281, 74736396), (314, 66881934), (471, 44587956), (562, 37368198), (628, 33440967), (843, 24912132), (942, 22293978), (1099, 19109124), (1124, 18684099), (1413, 14862652), (1686, 12456066), (1884, 11146989), (1889, 11117484), (1967, 10676628), (2198, 9554562), (2529, 8304044), (2826, 7431326), (3297, 6369708), (3372, 6228033), (3778, 5558742), (3934, 5338314), (4396, 4777281), (5058, 4152022), (5652, 3715663), (5667, 3705828), (5901, 3558876), (6594, 3184854), (7556, 2779371), (7868, 2669157), (9891, 2123236), (10116, 2076011), (11334, 1852914), (11802, 1779438), (13188, 1592427), (13223, 1588212), (17001, 1235276), (17703, 1186292), (19782, 1061618), (22668, 926457), (23604, 889719), (26446, 794106), (34002, 617638), (35406, 593146), (39564, 530809), (39669, 529404), (44117, 476028), (52892, 397053), (68004, 308819), (70812, 296573), (79338, 264702), (88234, 238014), (119007, 176468), (132351, 158676)]