21484528

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{103291}}^1$

素因数の和:103312

約数の個数: 20

約数和(自身を含む): 44828728

約数和(自身を除く): 23344200

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 103291, 206582, 413164, 826328, 1342783, 1652656, 2685566, 5371132, 10742264, 21484528]

約数ペア:

[(1, 21484528), (2, 10742264), (4, 5371132), (8, 2685566), (13, 1652656), (16, 1342783), (26, 826328), (52, 413164), (104, 206582), (208, 103291)]