20990736

素因数分解:

$2^4\times 3^2\times {\mathrm{13}}^1\times {\mathrm{11213}}^1$

素因数の和:11240

約数の個数: 60

約数和(自身を含む): 63269388

約数和(自身を除く): 42278652

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 13, 16, 18, 24, 26, 36, 39, 48, 52, 72, 78, 104, 117, 144, 156, 208, 234, 312, 468, 624, 936, 1872, 11213, 22426, 33639, 44852, 67278, 89704, 100917, 134556, 145769, 179408, 201834, 269112, 291538, 403668, 437307, 538224, 583076, 807336, 874614, 1166152, 1311921, 1614672, 1749228, 2332304, 2623842, 3498456, 5247684, 6996912, 10495368, 20990736]

約数ペア:

[(1, 20990736), (2, 10495368), (3, 6996912), (4, 5247684), (6, 3498456), (8, 2623842), (9, 2332304), (12, 1749228), (13, 1614672), (16, 1311921), (18, 1166152), (24, 874614), (26, 807336), (36, 583076), (39, 538224), (48, 437307), (52, 403668), (72, 291538), (78, 269112), (104, 201834), (117, 179408), (144, 145769), (156, 134556), (208, 100917), (234, 89704), (312, 67278), (468, 44852), (624, 33639), (936, 22426), (1872, 11213)]