19973355

素因数分解:

$3^1\times 5^1\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{691}}^1$

素因数の和:787

約数の個数: 32

約数和(自身を含む): 33481728

約数和(自身を除く): 13508373

約数列:

[1, 3, 5, 15, 41, 47, 123, 141, 205, 235, 615, 691, 705, 1927, 2073, 3455, 5781, 9635, 10365, 28331, 28905, 32477, 84993, 97431, 141655, 162385, 424965, 487155, 1331557, 3994671, 6657785, 19973355]

約数ペア:

[(1, 19973355), (3, 6657785), (5, 3994671), (15, 1331557), (41, 487155), (47, 424965), (123, 162385), (141, 141655), (205, 97431), (235, 84993), (615, 32477), (691, 28905), (705, 28331), (1927, 10365), (2073, 9635), (3455, 5781)]