21167309884

素因数分解:

$2^2\times 7^2\times {\mathrm{263}}^1\times {\mathrm{283}}^1\times {\mathrm{1451}}^1$

素因数の和:2015

約数の個数: 72

約数和(自身を含む): 43437195648

約数和(自身を除く): 22269885764

約数列:

[1, 2, 4, 7, 14, 28, 49, 98, 196, 263, 283, 526, 566, 1052, 1132, 1451, 1841, 1981, 2902, 3682, 3962, 5804, 7364, 7924, 10157, 12887, 13867, 20314, 25774, 27734, 40628, 51548, 55468, 71099, 74429, 142198, 148858, 284396, 297716, 381613, 410633, 521003, 763226, 821266, 1042006, 1526452, 1642532, 2084012, 2671291, 2874431, 3647021, 5342582, 5748862, 7294042, 10685164, 11497724, 14588084, 18699037, 20121017, 37398074, 40242034, 74796148, 80484068, 107996479, 215992958, 431985916, 755975353, 1511950706, 3023901412, 5291827471, 10583654942, 21167309884]

約数ペア:

[(1, 21167309884), (2, 10583654942), (4, 5291827471), (7, 3023901412), (14, 1511950706), (28, 755975353), (49, 431985916), (98, 215992958), (196, 107996479), (263, 80484068), (283, 74796148), (526, 40242034), (566, 37398074), (1052, 20121017), (1132, 18699037), (1451, 14588084), (1841, 11497724), (1981, 10685164), (2902, 7294042), (3682, 5748862), (3962, 5342582), (5804, 3647021), (7364, 2874431), (7924, 2671291), (10157, 2084012), (12887, 1642532), (13867, 1526452), (20314, 1042006), (25774, 821266), (27734, 763226), (40628, 521003), (51548, 410633), (55468, 381613), (71099, 297716), (74429, 284396), (142198, 148858)]