12887120

素因数分解:

$2^4\times 5^1\times {\mathrm{41}}^1\times {\mathrm{3929}}^1$

素因数の和:3983

約数の個数: 40

約数和(自身を含む): 30701160

約数和(自身を除く): 17814040

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 41, 80, 82, 164, 205, 328, 410, 656, 820, 1640, 3280, 3929, 7858, 15716, 19645, 31432, 39290, 62864, 78580, 157160, 161089, 314320, 322178, 644356, 805445, 1288712, 1610890, 2577424, 3221780, 6443560, 12887120]

約数ペア:

[(1, 12887120), (2, 6443560), (4, 3221780), (5, 2577424), (8, 1610890), (10, 1288712), (16, 805445), (20, 644356), (40, 322178), (41, 314320), (80, 161089), (82, 157160), (164, 78580), (205, 62864), (328, 39290), (410, 31432), (656, 19645), (820, 15716), (1640, 7858), (3280, 3929)]