21865688

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{210247}}^1$

素因数の和:210266

約数の個数: 16

約数和(自身を含む): 44152080

約数和(自身を除く): 22286392

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 210247, 420494, 840988, 1681976, 2733211, 5466422, 10932844, 21865688]

約数ペア:

[(1, 21865688), (2, 10932844), (4, 5466422), (8, 2733211), (13, 1681976), (26, 840988), (52, 420494), (104, 210247)]