20212821068

素因数分解:

$2^2\times {\mathrm{11}}^2\times {\mathrm{173}}^1\times {\mathrm{283}}^1\times {\mathrm{853}}^1$

素因数の和:1335

約数の個数: 72

約数和(自身を含む): 39289376784

約数和(自身を除く): 19076555716

約数列:

[1, 2, 4, 11, 22, 44, 121, 173, 242, 283, 346, 484, 566, 692, 853, 1132, 1706, 1903, 3113, 3412, 3806, 6226, 7612, 9383, 12452, 18766, 20933, 34243, 37532, 41866, 48959, 68486, 83732, 97918, 103213, 136972, 147569, 195836, 206426, 241399, 295138, 412852, 482798, 538549, 590276, 965596, 1077098, 1623259, 2154196, 2655389, 3246518, 5310778, 5924039, 6493036, 10621556, 11848078, 17855849, 23696156, 29209279, 35711698, 41762027, 58418558, 71423396, 83524054, 116837116, 167048108, 459382297, 918764594, 1837529188, 5053205267, 10106410534, 20212821068]

約数ペア:

[(1, 20212821068), (2, 10106410534), (4, 5053205267), (11, 1837529188), (22, 918764594), (44, 459382297), (121, 167048108), (173, 116837116), (242, 83524054), (283, 71423396), (346, 58418558), (484, 41762027), (566, 35711698), (692, 29209279), (853, 23696156), (1132, 17855849), (1706, 11848078), (1903, 10621556), (3113, 6493036), (3412, 5924039), (3806, 5310778), (6226, 3246518), (7612, 2655389), (9383, 2154196), (12452, 1623259), (18766, 1077098), (20933, 965596), (34243, 590276), (37532, 538549), (41866, 482798), (48959, 412852), (68486, 295138), (83732, 241399), (97918, 206426), (103213, 195836), (136972, 147569)]