990731988

素因数分解:

$2^2\times 3^2\times {\mathrm{29}}^1\times {\mathrm{47}}^1\times {\mathrm{61}}^1\times {\mathrm{331}}^1$

素因数の和:478

約数の個数: 144

約数和(自身を含む): 2697327360

約数和(自身を除く): 1706595372

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 29, 36, 47, 58, 61, 87, 94, 116, 122, 141, 174, 183, 188, 244, 261, 282, 331, 348, 366, 423, 522, 549, 564, 662, 732, 846, 993, 1044, 1098, 1324, 1363, 1692, 1769, 1986, 2196, 2726, 2867, 2979, 3538, 3972, 4089, 5307, 5452, 5734, 5958, 7076, 8178, 8601, 9599, 10614, 11468, 11916, 12267, 15557, 15921, 16356, 17202, 19198, 20191, 21228, 24534, 25803, 28797, 31114, 31842, 34404, 38396, 40382, 46671, 49068, 51606, 57594, 60573, 62228, 63684, 80764, 83143, 86391, 93342, 103212, 115188, 121146, 140013, 166286, 172782, 181719, 186684, 242292, 249429, 280026, 332572, 345564, 363438, 451153, 498858, 560052, 585539, 726876, 748287, 902306, 948977, 997716, 1171078, 1353459, 1496574, 1756617, 1804612, 1897954, 2342156, 2706918, 2846931, 2993148, 3513234, 3795908, 4060377, 5269851, 5413836, 5693862, 7026468, 8120754, 8540793, 10539702, 11387724, 16241508, 17081586, 21079404, 27520333, 34163172, 55040666, 82560999, 110081332, 165121998, 247682997, 330243996, 495365994, 990731988]

約数ペア:

[(1, 990731988), (2, 495365994), (3, 330243996), (4, 247682997), (6, 165121998), (9, 110081332), (12, 82560999), (18, 55040666), (29, 34163172), (36, 27520333), (47, 21079404), (58, 17081586), (61, 16241508), (87, 11387724), (94, 10539702), (116, 8540793), (122, 8120754), (141, 7026468), (174, 5693862), (183, 5413836), (188, 5269851), (244, 4060377), (261, 3795908), (282, 3513234), (331, 2993148), (348, 2846931), (366, 2706918), (423, 2342156), (522, 1897954), (549, 1804612), (564, 1756617), (662, 1496574), (732, 1353459), (846, 1171078), (993, 997716), (1044, 948977), (1098, 902306), (1324, 748287), (1363, 726876), (1692, 585539), (1769, 560052), (1986, 498858), (2196, 451153), (2726, 363438), (2867, 345564), (2979, 332572), (3538, 280026), (3972, 249429), (4089, 242292), (5307, 186684), (5452, 181719), (5734, 172782), (5958, 166286), (7076, 140013), (8178, 121146), (8601, 115188), (9599, 103212), (10614, 93342), (11468, 86391), (11916, 83143), (12267, 80764), (15557, 63684), (15921, 62228), (16356, 60573), (17202, 57594), (19198, 51606), (20191, 49068), (21228, 46671), (24534, 40382), (25803, 38396), (28797, 34404), (31114, 31842)]