19874772

素因数分解:

$2^2\times 3^2\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{347}}^1$

素因数の和:437

約数の個数: 72

約数和(自身を含む): 52948896

約数和(自身を除く): 33074124

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 36, 37, 43, 74, 86, 111, 129, 148, 172, 222, 258, 333, 347, 387, 444, 516, 666, 694, 774, 1041, 1332, 1388, 1548, 1591, 2082, 3123, 3182, 4164, 4773, 6246, 6364, 9546, 12492, 12839, 14319, 14921, 19092, 25678, 28638, 29842, 38517, 44763, 51356, 57276, 59684, 77034, 89526, 115551, 134289, 154068, 179052, 231102, 268578, 462204, 537156, 552077, 1104154, 1656231, 2208308, 3312462, 4968693, 6624924, 9937386, 19874772]

約数ペア:

[(1, 19874772), (2, 9937386), (3, 6624924), (4, 4968693), (6, 3312462), (9, 2208308), (12, 1656231), (18, 1104154), (36, 552077), (37, 537156), (43, 462204), (74, 268578), (86, 231102), (111, 179052), (129, 154068), (148, 134289), (172, 115551), (222, 89526), (258, 77034), (333, 59684), (347, 57276), (387, 51356), (444, 44763), (516, 38517), (666, 29842), (694, 28638), (774, 25678), (1041, 19092), (1332, 14921), (1388, 14319), (1548, 12839), (1591, 12492), (2082, 9546), (3123, 6364), (3182, 6246), (4164, 4773)]