16820955

素因数分解:

$3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{8693}}^1$

素因数の和:8747

約数の個数: 24

約数和(自身を含む): 29837808

約数和(自身を除く): 13016853

約数列:

[1, 3, 5, 9, 15, 43, 45, 129, 215, 387, 645, 1935, 8693, 26079, 43465, 78237, 130395, 373799, 391185, 1121397, 1868995, 3364191, 5606985, 16820955]

約数ペア:

[(1, 16820955), (3, 5606985), (5, 3364191), (9, 1868995), (15, 1121397), (43, 391185), (45, 373799), (129, 130395), (215, 78237), (387, 43465), (645, 26079), (1935, 8693)]