1678540

素因数分解:

$2^2\times 5^1\times {\mathrm{23}}^1\times {\mathrm{41}}^1\times {\mathrm{89}}^1$

素因数の和:162

約数の個数: 48

約数和(自身を含む): 3810240

約数和(自身を除く): 2131700

約数列:

[1, 2, 4, 5, 10, 20, 23, 41, 46, 82, 89, 92, 115, 164, 178, 205, 230, 356, 410, 445, 460, 820, 890, 943, 1780, 1886, 2047, 3649, 3772, 4094, 4715, 7298, 8188, 9430, 10235, 14596, 18245, 18860, 20470, 36490, 40940, 72980, 83927, 167854, 335708, 419635, 839270, 1678540]

約数ペア:

[(1, 1678540), (2, 839270), (4, 419635), (5, 335708), (10, 167854), (20, 83927), (23, 72980), (41, 40940), (46, 36490), (82, 20470), (89, 18860), (92, 18245), (115, 14596), (164, 10235), (178, 9430), (205, 8188), (230, 7298), (356, 4715), (410, 4094), (445, 3772), (460, 3649), (820, 2047), (890, 1886), (943, 1780)]