20195745

素因数分解:

$3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{29}}^1\times {\mathrm{2731}}^1$

素因数の和:2785

約数の個数: 32

約数和(自身を含む): 35406720

約数和(自身を除く): 15210975

約数列:

[1, 3, 5, 15, 17, 29, 51, 85, 87, 145, 255, 435, 493, 1479, 2465, 2731, 7395, 8193, 13655, 40965, 46427, 79199, 139281, 232135, 237597, 395995, 696405, 1187985, 1346383, 4039149, 6731915, 20195745]

約数ペア:

[(1, 20195745), (3, 6731915), (5, 4039149), (15, 1346383), (17, 1187985), (29, 696405), (51, 395995), (85, 237597), (87, 232135), (145, 139281), (255, 79199), (435, 46427), (493, 40965), (1479, 13655), (2465, 8193), (2731, 7395)]