3997910

素因数分解:

$2^1\times 5^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{199}}^1$

素因数の和:261

約数の個数: 48

約数和(自身を含む): 8618400

約数和(自身を除く): 4620490

約数列:

[1, 2, 5, 7, 10, 14, 35, 41, 49, 70, 82, 98, 199, 205, 245, 287, 398, 410, 490, 574, 995, 1393, 1435, 1990, 2009, 2786, 2870, 4018, 6965, 8159, 9751, 10045, 13930, 16318, 19502, 20090, 40795, 48755, 57113, 81590, 97510, 114226, 285565, 399791, 571130, 799582, 1998955, 3997910]

約数ペア:

[(1, 3997910), (2, 1998955), (5, 799582), (7, 571130), (10, 399791), (14, 285565), (35, 114226), (41, 97510), (49, 81590), (70, 57113), (82, 48755), (98, 40795), (199, 20090), (205, 19502), (245, 16318), (287, 13930), (398, 10045), (410, 9751), (490, 8159), (574, 6965), (995, 4018), (1393, 2870), (1435, 2786), (1990, 2009)]