15991640

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{41}}^1\times {\mathrm{199}}^1$

素因数の和:265

約数の個数: 96

約数和(自身を含む): 43092000

約数和(自身を除く): 27100360

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 41, 49, 56, 70, 82, 98, 140, 164, 196, 199, 205, 245, 280, 287, 328, 392, 398, 410, 490, 574, 796, 820, 980, 995, 1148, 1393, 1435, 1592, 1640, 1960, 1990, 2009, 2296, 2786, 2870, 3980, 4018, 5572, 5740, 6965, 7960, 8036, 8159, 9751, 10045, 11144, 11480, 13930, 16072, 16318, 19502, 20090, 27860, 32636, 39004, 40180, 40795, 48755, 55720, 57113, 65272, 78008, 80360, 81590, 97510, 114226, 163180, 195020, 228452, 285565, 326360, 390040, 399791, 456904, 571130, 799582, 1142260, 1599164, 1998955, 2284520, 3198328, 3997910, 7995820, 15991640]

約数ペア:

[(1, 15991640), (2, 7995820), (4, 3997910), (5, 3198328), (7, 2284520), (8, 1998955), (10, 1599164), (14, 1142260), (20, 799582), (28, 571130), (35, 456904), (40, 399791), (41, 390040), (49, 326360), (56, 285565), (70, 228452), (82, 195020), (98, 163180), (140, 114226), (164, 97510), (196, 81590), (199, 80360), (205, 78008), (245, 65272), (280, 57113), (287, 55720), (328, 48755), (392, 40795), (398, 40180), (410, 39004), (490, 32636), (574, 27860), (796, 20090), (820, 19502), (980, 16318), (995, 16072), (1148, 13930), (1393, 11480), (1435, 11144), (1592, 10045), (1640, 9751), (1960, 8159), (1990, 8036), (2009, 7960), (2296, 6965), (2786, 5740), (2870, 5572), (3980, 4018)]