19661915

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{79}}^1\times {\mathrm{547}}^1$

素因数の和:651

約数の個数: 32

約数和(自身を含む): 29460480

約数和(自身を除く): 9798565

約数列:

[1, 5, 7, 13, 35, 65, 79, 91, 395, 455, 547, 553, 1027, 2735, 2765, 3829, 5135, 7111, 7189, 19145, 35555, 35945, 43213, 49777, 216065, 248885, 302491, 561769, 1512455, 2808845, 3932383, 19661915]

約数ペア:

[(1, 19661915), (5, 3932383), (7, 2808845), (13, 1512455), (35, 561769), (65, 302491), (79, 248885), (91, 216065), (395, 49777), (455, 43213), (547, 35945), (553, 35555), (1027, 19145), (2735, 7189), (2765, 7111), (3829, 5135)]