21111246

素因数分解:

$2^1\times 3^3\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{61}}^1$

素因数の和:131

約数の個数: 128

約数和(自身を含む): 56246400

約数和(自身を除く): 35135154

約数列:

[1, 2, 3, 6, 9, 13, 17, 18, 26, 27, 29, 34, 39, 51, 54, 58, 61, 78, 87, 102, 117, 122, 153, 174, 183, 221, 234, 261, 306, 351, 366, 377, 442, 459, 493, 522, 549, 663, 702, 754, 783, 793, 918, 986, 1037, 1098, 1131, 1326, 1479, 1566, 1586, 1647, 1769, 1989, 2074, 2262, 2379, 2958, 3111, 3294, 3393, 3538, 3978, 4437, 4758, 5307, 5967, 6222, 6409, 6786, 7137, 8874, 9333, 10179, 10614, 11934, 12818, 13311, 13481, 14274, 15921, 18666, 19227, 20358, 21411, 22997, 26622, 26962, 27999, 30073, 31842, 38454, 40443, 42822, 45994, 47763, 55998, 57681, 60146, 68991, 80886, 90219, 95526, 115362, 121329, 137982, 173043, 180438, 206973, 242658, 270657, 346086, 363987, 390949, 413946, 541314, 620919, 727974, 781898, 811971, 1172847, 1241838, 1623942, 2345694, 3518541, 7037082, 10555623, 21111246]

約数ペア:

[(1, 21111246), (2, 10555623), (3, 7037082), (6, 3518541), (9, 2345694), (13, 1623942), (17, 1241838), (18, 1172847), (26, 811971), (27, 781898), (29, 727974), (34, 620919), (39, 541314), (51, 413946), (54, 390949), (58, 363987), (61, 346086), (78, 270657), (87, 242658), (102, 206973), (117, 180438), (122, 173043), (153, 137982), (174, 121329), (183, 115362), (221, 95526), (234, 90219), (261, 80886), (306, 68991), (351, 60146), (366, 57681), (377, 55998), (442, 47763), (459, 45994), (493, 42822), (522, 40443), (549, 38454), (663, 31842), (702, 30073), (754, 27999), (783, 26962), (793, 26622), (918, 22997), (986, 21411), (1037, 20358), (1098, 19227), (1131, 18666), (1326, 15921), (1479, 14274), (1566, 13481), (1586, 13311), (1647, 12818), (1769, 11934), (1989, 10614), (2074, 10179), (2262, 9333), (2379, 8874), (2958, 7137), (3111, 6786), (3294, 6409), (3393, 6222), (3538, 5967), (3978, 5307), (4437, 4758)]