21305888

素因数分解:

$2^5\times {\mathrm{89}}^1\times {\mathrm{7481}}^1$

素因数の和:7580

約数の個数: 24

約数和(自身を含む): 42422940

約数和(自身を除く): 21117052

約数列:

[1, 2, 4, 8, 16, 32, 89, 178, 356, 712, 1424, 2848, 7481, 14962, 29924, 59848, 119696, 239392, 665809, 1331618, 2663236, 5326472, 10652944, 21305888]

約数ペア:

[(1, 21305888), (2, 10652944), (4, 5326472), (8, 2663236), (16, 1331618), (32, 665809), (89, 239392), (178, 119696), (356, 59848), (712, 29924), (1424, 14962), (2848, 7481)]