20782908

素因数分解:

$2^2\times 3^2\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{1171}}^1$

素因数の和:1227

約数の個数: 72

約数和(自身を含む): 57592080

約数和(自身を除く): 36809172

約数列:

[1, 2, 3, 4, 6, 9, 12, 17, 18, 29, 34, 36, 51, 58, 68, 87, 102, 116, 153, 174, 204, 261, 306, 348, 493, 522, 612, 986, 1044, 1171, 1479, 1972, 2342, 2958, 3513, 4437, 4684, 5916, 7026, 8874, 10539, 14052, 17748, 19907, 21078, 33959, 39814, 42156, 59721, 67918, 79628, 101877, 119442, 135836, 179163, 203754, 238884, 305631, 358326, 407508, 577303, 611262, 716652, 1154606, 1222524, 1731909, 2309212, 3463818, 5195727, 6927636, 10391454, 20782908]

約数ペア:

[(1, 20782908), (2, 10391454), (3, 6927636), (4, 5195727), (6, 3463818), (9, 2309212), (12, 1731909), (17, 1222524), (18, 1154606), (29, 716652), (34, 611262), (36, 577303), (51, 407508), (58, 358326), (68, 305631), (87, 238884), (102, 203754), (116, 179163), (153, 135836), (174, 119442), (204, 101877), (261, 79628), (306, 67918), (348, 59721), (493, 42156), (522, 39814), (612, 33959), (986, 21078), (1044, 19907), (1171, 17748), (1479, 14052), (1972, 10539), (2342, 8874), (2958, 7026), (3513, 5916), (4437, 4684)]