19994156

素因数分解:

$2^2\times 7^3\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1$

素因数の和:116

約数の個数: 96

約数和(自身を含む): 47040000

約数和(自身を除く): 27045844

約数列:

[1, 2, 4, 7, 13, 14, 19, 26, 28, 38, 49, 52, 59, 76, 91, 98, 118, 133, 182, 196, 236, 247, 266, 343, 364, 413, 494, 532, 637, 686, 767, 826, 931, 988, 1121, 1274, 1372, 1534, 1652, 1729, 1862, 2242, 2548, 2891, 3068, 3458, 3724, 4459, 4484, 5369, 5782, 6517, 6916, 7847, 8918, 10738, 11564, 12103, 13034, 14573, 15694, 17836, 20237, 21476, 24206, 26068, 29146, 31388, 37583, 40474, 48412, 54929, 58292, 75166, 80948, 84721, 102011, 109858, 150332, 169442, 204022, 219716, 263081, 338884, 384503, 408044, 526162, 714077, 769006, 1052324, 1428154, 1538012, 2856308, 4998539, 9997078, 19994156]

約数ペア:

[(1, 19994156), (2, 9997078), (4, 4998539), (7, 2856308), (13, 1538012), (14, 1428154), (19, 1052324), (26, 769006), (28, 714077), (38, 526162), (49, 408044), (52, 384503), (59, 338884), (76, 263081), (91, 219716), (98, 204022), (118, 169442), (133, 150332), (182, 109858), (196, 102011), (236, 84721), (247, 80948), (266, 75166), (343, 58292), (364, 54929), (413, 48412), (494, 40474), (532, 37583), (637, 31388), (686, 29146), (767, 26068), (826, 24206), (931, 21476), (988, 20237), (1121, 17836), (1274, 15694), (1372, 14573), (1534, 13034), (1652, 12103), (1729, 11564), (1862, 10738), (2242, 8918), (2548, 7847), (2891, 6916), (3068, 6517), (3458, 5782), (3724, 5369), (4459, 4484)]