20213306475

素因数分解:

$3^1\times 5^2\times {\mathrm{41}}^1\times {\mathrm{149}}^1\times {\mathrm{157}}^1\times {\mathrm{281}}^1$

素因数の和:641

約数の個数: 96

約数和(自身を含む): 34807147200

約数和(自身を除く): 14593840725

約数列:

[1, 3, 5, 15, 25, 41, 75, 123, 149, 157, 205, 281, 447, 471, 615, 745, 785, 843, 1025, 1405, 2235, 2355, 3075, 3725, 3925, 4215, 6109, 6437, 7025, 11175, 11521, 11775, 18327, 19311, 21075, 23393, 30545, 32185, 34563, 41869, 44117, 57605, 70179, 91635, 96555, 116965, 125607, 132351, 152725, 160925, 172815, 209345, 220585, 288025, 350895, 458175, 482775, 584825, 628035, 661755, 864075, 959113, 1046725, 1102925, 1716629, 1754475, 1808797, 2877339, 3140175, 3308775, 4795565, 5149887, 5426391, 6573433, 8583145, 9043985, 14386695, 19720299, 23977825, 25749435, 27131955, 32867165, 42915725, 45219925, 71933475, 98601495, 128747175, 135659775, 164335825, 269510753, 493007475, 808532259, 1347553765, 4042661295, 6737768825, 20213306475]

約数ペア:

[(1, 20213306475), (3, 6737768825), (5, 4042661295), (15, 1347553765), (25, 808532259), (41, 493007475), (75, 269510753), (123, 164335825), (149, 135659775), (157, 128747175), (205, 98601495), (281, 71933475), (447, 45219925), (471, 42915725), (615, 32867165), (745, 27131955), (785, 25749435), (843, 23977825), (1025, 19720299), (1405, 14386695), (2235, 9043985), (2355, 8583145), (3075, 6573433), (3725, 5426391), (3925, 5149887), (4215, 4795565), (6109, 3308775), (6437, 3140175), (7025, 2877339), (11175, 1808797), (11521, 1754475), (11775, 1716629), (18327, 1102925), (19311, 1046725), (21075, 959113), (23393, 864075), (30545, 661755), (32185, 628035), (34563, 584825), (41869, 482775), (44117, 458175), (57605, 350895), (70179, 288025), (91635, 220585), (96555, 209345), (116965, 172815), (125607, 160925), (132351, 152725)]