820200420

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{409}}^1\times {\mathrm{857}}^1$

素因数の和:1294

約数の個数: 144

約数和(自身を含む): 2689006320

約数和(自身を除く): 1868805900

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 36, 39, 45, 52, 60, 65, 78, 90, 117, 130, 156, 180, 195, 234, 260, 390, 409, 468, 585, 780, 818, 857, 1170, 1227, 1636, 1714, 2045, 2340, 2454, 2571, 3428, 3681, 4090, 4285, 4908, 5142, 5317, 6135, 7362, 7713, 8180, 8570, 10284, 10634, 11141, 12270, 12855, 14724, 15426, 15951, 17140, 18405, 21268, 22282, 24540, 25710, 26585, 30852, 31902, 33423, 36810, 38565, 44564, 47853, 51420, 53170, 55705, 63804, 66846, 73620, 77130, 79755, 95706, 100269, 106340, 111410, 133692, 154260, 159510, 167115, 191412, 200538, 222820, 239265, 319020, 334230, 350513, 401076, 478530, 501345, 668460, 701026, 957060, 1002690, 1051539, 1402052, 1752565, 2005380, 2103078, 3154617, 3505130, 4206156, 4556669, 5257695, 6309234, 7010260, 9113338, 10515390, 12618468, 13670007, 15773085, 18226676, 21030780, 22783345, 27340014, 31546170, 41010021, 45566690, 54680028, 63092340, 68350035, 82020042, 91133380, 136700070, 164040084, 205050105, 273400140, 410100210, 820200420]

約数ペア:

[(1, 820200420), (2, 410100210), (3, 273400140), (4, 205050105), (5, 164040084), (6, 136700070), (9, 91133380), (10, 82020042), (12, 68350035), (13, 63092340), (15, 54680028), (18, 45566690), (20, 41010021), (26, 31546170), (30, 27340014), (36, 22783345), (39, 21030780), (45, 18226676), (52, 15773085), (60, 13670007), (65, 12618468), (78, 10515390), (90, 9113338), (117, 7010260), (130, 6309234), (156, 5257695), (180, 4556669), (195, 4206156), (234, 3505130), (260, 3154617), (390, 2103078), (409, 2005380), (468, 1752565), (585, 1402052), (780, 1051539), (818, 1002690), (857, 957060), (1170, 701026), (1227, 668460), (1636, 501345), (1714, 478530), (2045, 401076), (2340, 350513), (2454, 334230), (2571, 319020), (3428, 239265), (3681, 222820), (4090, 200538), (4285, 191412), (4908, 167115), (5142, 159510), (5317, 154260), (6135, 133692), (7362, 111410), (7713, 106340), (8180, 100269), (8570, 95706), (10284, 79755), (10634, 77130), (11141, 73620), (12270, 66846), (12855, 63804), (14724, 55705), (15426, 53170), (15951, 51420), (17140, 47853), (18405, 44564), (21268, 38565), (22282, 36810), (24540, 33423), (25710, 31902), (26585, 30852)]