21745401

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{101}}^1\times {\mathrm{1669}}^1$

素因数の和:1816

約数の個数: 16

約数和(自身を含む): 29979840

約数和(自身を除く): 8234439

約数列:

[1, 3, 43, 101, 129, 303, 1669, 4343, 5007, 13029, 71767, 168569, 215301, 505707, 7248467, 21745401]

約数ペア:

[(1, 21745401), (3, 7248467), (43, 505707), (101, 215301), (129, 168569), (303, 71767), (1669, 13029), (4343, 5007)]