21203536

素因数分解:

$2^4\times {\mathrm{101}}^1\times {\mathrm{13121}}^1$

素因数の和:13230

約数の個数: 20

約数和(自身を含む): 41491764

約数和(自身を除く): 20288228

約数列:

[1, 2, 4, 8, 16, 101, 202, 404, 808, 1616, 13121, 26242, 52484, 104968, 209936, 1325221, 2650442, 5300884, 10601768, 21203536]

約数ペア:

[(1, 21203536), (2, 10601768), (4, 5300884), (8, 2650442), (16, 1325221), (101, 209936), (202, 104968), (404, 52484), (808, 26242), (1616, 13121)]