20169794740

素因数分解:

$2^2\times 5^1\times {\mathrm{31}}^2\times {\mathrm{401}}^1\times {\mathrm{2617}}^1$

素因数の和:3089

約数の個数: 72

約数和(自身を含む): 43892895816

約数和(自身を除く): 23723101076

約数列:

[1, 2, 4, 5, 10, 20, 31, 62, 124, 155, 310, 401, 620, 802, 961, 1604, 1922, 2005, 2617, 3844, 4010, 4805, 5234, 8020, 9610, 10468, 12431, 13085, 19220, 24862, 26170, 49724, 52340, 62155, 81127, 124310, 162254, 248620, 324508, 385361, 405635, 770722, 811270, 1049417, 1541444, 1622540, 1926805, 2098834, 2514937, 3853610, 4197668, 5029874, 5247085, 7707220, 10059748, 10494170, 12574685, 20988340, 25149370, 32531927, 50298740, 65063854, 130127708, 162659635, 325319270, 650638540, 1008489737, 2016979474, 4033958948, 5042448685, 10084897370, 20169794740]

約数ペア:

[(1, 20169794740), (2, 10084897370), (4, 5042448685), (5, 4033958948), (10, 2016979474), (20, 1008489737), (31, 650638540), (62, 325319270), (124, 162659635), (155, 130127708), (310, 65063854), (401, 50298740), (620, 32531927), (802, 25149370), (961, 20988340), (1604, 12574685), (1922, 10494170), (2005, 10059748), (2617, 7707220), (3844, 5247085), (4010, 5029874), (4805, 4197668), (5234, 3853610), (8020, 2514937), (9610, 2098834), (10468, 1926805), (12431, 1622540), (13085, 1541444), (19220, 1049417), (24862, 811270), (26170, 770722), (49724, 405635), (52340, 385361), (62155, 324508), (81127, 248620), (124310, 162254)]