20052921

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{419}}^1$

素因数の和:525

約数の個数: 32

約数和(自身を含む): 31933440

約数和(自身を除く): 11880519

約数列:

[1, 3, 7, 21, 43, 53, 129, 159, 301, 371, 419, 903, 1113, 1257, 2279, 2933, 6837, 8799, 15953, 18017, 22207, 47859, 54051, 66621, 126119, 155449, 378357, 466347, 954901, 2864703, 6684307, 20052921]

約数ペア:

[(1, 20052921), (3, 6684307), (7, 2864703), (21, 954901), (43, 466347), (53, 378357), (129, 155449), (159, 126119), (301, 66621), (371, 54051), (419, 47859), (903, 22207), (1113, 18017), (1257, 15953), (2279, 8799), (2933, 6837)]