20512272800

素因数分解:

$2^5\times 5^2\times {\mathrm{43}}^1\times {\mathrm{401}}^1\times {\mathrm{1487}}^1$

素因数の和:1951

約数の個数: 144

約数和(自身を含む): 51402460032

約数和(自身を除く): 30890187232

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 43, 50, 80, 86, 100, 160, 172, 200, 215, 344, 400, 401, 430, 688, 800, 802, 860, 1075, 1376, 1487, 1604, 1720, 2005, 2150, 2974, 3208, 3440, 4010, 4300, 5948, 6416, 6880, 7435, 8020, 8600, 10025, 11896, 12832, 14870, 16040, 17200, 17243, 20050, 23792, 29740, 32080, 34400, 34486, 37175, 40100, 47584, 59480, 63941, 64160, 68972, 74350, 80200, 86215, 118960, 127882, 137944, 148700, 160400, 172430, 237920, 255764, 275888, 297400, 319705, 320800, 344860, 431075, 511528, 551776, 594800, 596287, 639410, 689720, 862150, 1023056, 1189600, 1192574, 1278820, 1379440, 1598525, 1724300, 2046112, 2385148, 2557640, 2758880, 2981435, 3197050, 3448600, 4770296, 5115280, 5962870, 6394100, 6897200, 9540592, 10230560, 11925740, 12788200, 13794400, 14907175, 19081184, 23851480, 25576400, 25640341, 29814350, 47702960, 51152800, 51280682, 59628700, 95405920, 102561364, 119257400, 128201705, 205122728, 238514800, 256403410, 410245456, 477029600, 512806820, 641008525, 820490912, 1025613640, 1282017050, 2051227280, 2564034100, 4102454560, 5128068200, 10256136400, 20512272800]

約数ペア:

[(1, 20512272800), (2, 10256136400), (4, 5128068200), (5, 4102454560), (8, 2564034100), (10, 2051227280), (16, 1282017050), (20, 1025613640), (25, 820490912), (32, 641008525), (40, 512806820), (43, 477029600), (50, 410245456), (80, 256403410), (86, 238514800), (100, 205122728), (160, 128201705), (172, 119257400), (200, 102561364), (215, 95405920), (344, 59628700), (400, 51280682), (401, 51152800), (430, 47702960), (688, 29814350), (800, 25640341), (802, 25576400), (860, 23851480), (1075, 19081184), (1376, 14907175), (1487, 13794400), (1604, 12788200), (1720, 11925740), (2005, 10230560), (2150, 9540592), (2974, 6897200), (3208, 6394100), (3440, 5962870), (4010, 5115280), (4300, 4770296), (5948, 3448600), (6416, 3197050), (6880, 2981435), (7435, 2758880), (8020, 2557640), (8600, 2385148), (10025, 2046112), (11896, 1724300), (12832, 1598525), (14870, 1379440), (16040, 1278820), (17200, 1192574), (17243, 1189600), (20050, 1023056), (23792, 862150), (29740, 689720), (32080, 639410), (34400, 596287), (34486, 594800), (37175, 551776), (40100, 511528), (47584, 431075), (59480, 344860), (63941, 320800), (64160, 319705), (68972, 297400), (74350, 275888), (80200, 255764), (86215, 237920), (118960, 172430), (127882, 160400), (137944, 148700)]