71636020

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{199}}^1\times {\mathrm{439}}^1$

素因数の和:688

約数の個数: 48

約数和(自身を含む): 155232000

約数和(自身を除く): 83595980

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 199, 205, 398, 410, 439, 796, 820, 878, 995, 1756, 1990, 2195, 3980, 4390, 8159, 8780, 16318, 17999, 32636, 35998, 40795, 71996, 81590, 87361, 89995, 163180, 174722, 179990, 349444, 359980, 436805, 873610, 1747220, 3581801, 7163602, 14327204, 17909005, 35818010, 71636020]

約数ペア:

[(1, 71636020), (2, 35818010), (4, 17909005), (5, 14327204), (10, 7163602), (20, 3581801), (41, 1747220), (82, 873610), (164, 436805), (199, 359980), (205, 349444), (398, 179990), (410, 174722), (439, 163180), (796, 89995), (820, 87361), (878, 81590), (995, 71996), (1756, 40795), (1990, 35998), (2195, 32636), (3980, 17999), (4390, 16318), (8159, 8780)]