21495103480

素因数分解:

$2^3\times 5^1\times {\mathrm{67}}^1\times {\mathrm{1951}}^1\times {\mathrm{4111}}^1$

素因数の和:6140

約数の個数: 64

約数和(自身を含む): 49122938880

約数和(自身を除く): 27627835400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 67, 134, 268, 335, 536, 670, 1340, 1951, 2680, 3902, 4111, 7804, 8222, 9755, 15608, 16444, 19510, 20555, 32888, 39020, 41110, 78040, 82220, 130717, 164440, 261434, 275437, 522868, 550874, 653585, 1045736, 1101748, 1307170, 1377185, 2203496, 2614340, 2754370, 5228680, 5508740, 8020561, 11017480, 16041122, 32082244, 40102805, 64164488, 80205610, 160411220, 320822440, 537377587, 1074755174, 2149510348, 2686887935, 4299020696, 5373775870, 10747551740, 21495103480]

約数ペア:

[(1, 21495103480), (2, 10747551740), (4, 5373775870), (5, 4299020696), (8, 2686887935), (10, 2149510348), (20, 1074755174), (40, 537377587), (67, 320822440), (134, 160411220), (268, 80205610), (335, 64164488), (536, 40102805), (670, 32082244), (1340, 16041122), (1951, 11017480), (2680, 8020561), (3902, 5508740), (4111, 5228680), (7804, 2754370), (8222, 2614340), (9755, 2203496), (15608, 1377185), (16444, 1307170), (19510, 1101748), (20555, 1045736), (32888, 653585), (39020, 550874), (41110, 522868), (78040, 275437), (82220, 261434), (130717, 164440)]