21031396065

素因数分解:

$3^5\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1018223}}^1$

素因数の和:1018260

約数の個数: 48

約数和(自身を含む): 40028421888

約数和(自身を除く): 18997025823

約数列:

[1, 3, 5, 9, 15, 17, 27, 45, 51, 81, 85, 135, 153, 243, 255, 405, 459, 765, 1215, 1377, 2295, 4131, 6885, 20655, 1018223, 3054669, 5091115, 9164007, 15273345, 17309791, 27492021, 45820035, 51929373, 82476063, 86548955, 137460105, 155788119, 247428189, 259646865, 412380315, 467364357, 778940595, 1237140945, 1402093071, 2336821785, 4206279213, 7010465355, 21031396065]

約数ペア:

[(1, 21031396065), (3, 7010465355), (5, 4206279213), (9, 2336821785), (15, 1402093071), (17, 1237140945), (27, 778940595), (45, 467364357), (51, 412380315), (81, 259646865), (85, 247428189), (135, 155788119), (153, 137460105), (243, 86548955), (255, 82476063), (405, 51929373), (459, 45820035), (765, 27492021), (1215, 17309791), (1377, 15273345), (2295, 9164007), (4131, 5091115), (6885, 3054669), (20655, 1018223)]