1810900

素因数分解:

$2^2\times 5^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{199}}^1$

素因数の和:233

約数の個数: 72

約数和(自身を含む): 4860800

約数和(自身を除く): 3049900

約数列:

[1, 2, 4, 5, 7, 10, 13, 14, 20, 25, 26, 28, 35, 50, 52, 65, 70, 91, 100, 130, 140, 175, 182, 199, 260, 325, 350, 364, 398, 455, 650, 700, 796, 910, 995, 1300, 1393, 1820, 1990, 2275, 2587, 2786, 3980, 4550, 4975, 5174, 5572, 6965, 9100, 9950, 10348, 12935, 13930, 18109, 19900, 25870, 27860, 34825, 36218, 51740, 64675, 69650, 72436, 90545, 129350, 139300, 181090, 258700, 362180, 452725, 905450, 1810900]

約数ペア:

[(1, 1810900), (2, 905450), (4, 452725), (5, 362180), (7, 258700), (10, 181090), (13, 139300), (14, 129350), (20, 90545), (25, 72436), (26, 69650), (28, 64675), (35, 51740), (50, 36218), (52, 34825), (65, 27860), (70, 25870), (91, 19900), (100, 18109), (130, 13930), (140, 12935), (175, 10348), (182, 9950), (199, 9100), (260, 6965), (325, 5572), (350, 5174), (364, 4975), (398, 4550), (455, 3980), (650, 2786), (700, 2587), (796, 2275), (910, 1990), (995, 1820), (1300, 1393)]