19995915

素因数分解:

$3^1\times 5^1\times {\mathrm{47}}^1\times {\mathrm{113}}^1\times {\mathrm{251}}^1$

素因数の和:419

約数の個数: 32

約数和(自身を含む): 33094656

約数和(自身を除く): 13098741

約数列:

[1, 3, 5, 15, 47, 113, 141, 235, 251, 339, 565, 705, 753, 1255, 1695, 3765, 5311, 11797, 15933, 26555, 28363, 35391, 58985, 79665, 85089, 141815, 176955, 425445, 1333061, 3999183, 6665305, 19995915]

約数ペア:

[(1, 19995915), (3, 6665305), (5, 3999183), (15, 1333061), (47, 425445), (113, 176955), (141, 141815), (235, 85089), (251, 79665), (339, 58985), (565, 35391), (705, 28363), (753, 26555), (1255, 15933), (1695, 11797), (3765, 5311)]