20121282495

素因数分解:

$3^4\times 5^1\times {\mathrm{71}}^1\times {\mathrm{157}}^1\times {\mathrm{4457}}^1$

素因数の和:4702

約数の個数: 80

約数和(自身を含む): 36818515008

約数和(自身を除く): 16697232513

約数列:

[1, 3, 5, 9, 15, 27, 45, 71, 81, 135, 157, 213, 355, 405, 471, 639, 785, 1065, 1413, 1917, 2355, 3195, 4239, 4457, 5751, 7065, 9585, 11147, 12717, 13371, 21195, 22285, 28755, 33441, 40113, 55735, 63585, 66855, 100323, 120339, 167205, 200565, 300969, 316447, 361017, 501615, 601695, 699749, 902907, 949341, 1504845, 1582235, 1805085, 2099247, 2848023, 3498745, 4514535, 4746705, 6297741, 8544069, 10496235, 14240115, 18893223, 25632207, 31488705, 42720345, 49682179, 56679669, 94466115, 128161035, 149046537, 248410895, 283398345, 447139611, 745232685, 1341418833, 2235698055, 4024256499, 6707094165, 20121282495]

約数ペア:

[(1, 20121282495), (3, 6707094165), (5, 4024256499), (9, 2235698055), (15, 1341418833), (27, 745232685), (45, 447139611), (71, 283398345), (81, 248410895), (135, 149046537), (157, 128161035), (213, 94466115), (355, 56679669), (405, 49682179), (471, 42720345), (639, 31488705), (785, 25632207), (1065, 18893223), (1413, 14240115), (1917, 10496235), (2355, 8544069), (3195, 6297741), (4239, 4746705), (4457, 4514535), (5751, 3498745), (7065, 2848023), (9585, 2099247), (11147, 1805085), (12717, 1582235), (13371, 1504845), (21195, 949341), (22285, 902907), (28755, 699749), (33441, 601695), (40113, 501615), (55735, 361017), (63585, 316447), (66855, 300969), (100323, 200565), (120339, 167205)]