181231400

素因数分解:

$2^3\times 5^2\times 7^2\times {\mathrm{18493}}^1$

素因数の和:18523

約数の個数: 72

約数和(自身を含む): 490183470

約数和(自身を除く): 308952070

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 25, 28, 35, 40, 49, 50, 56, 70, 98, 100, 140, 175, 196, 200, 245, 280, 350, 392, 490, 700, 980, 1225, 1400, 1960, 2450, 4900, 9800, 18493, 36986, 73972, 92465, 129451, 147944, 184930, 258902, 369860, 462325, 517804, 647255, 739720, 906157, 924650, 1035608, 1294510, 1812314, 1849300, 2589020, 3236275, 3624628, 3698600, 4530785, 5178040, 6472550, 7249256, 9061570, 12945100, 18123140, 22653925, 25890200, 36246280, 45307850, 90615700, 181231400]

約数ペア:

[(1, 181231400), (2, 90615700), (4, 45307850), (5, 36246280), (7, 25890200), (8, 22653925), (10, 18123140), (14, 12945100), (20, 9061570), (25, 7249256), (28, 6472550), (35, 5178040), (40, 4530785), (49, 3698600), (50, 3624628), (56, 3236275), (70, 2589020), (98, 1849300), (100, 1812314), (140, 1294510), (175, 1035608), (196, 924650), (200, 906157), (245, 739720), (280, 647255), (350, 517804), (392, 462325), (490, 369860), (700, 258902), (980, 184930), (1225, 147944), (1400, 129451), (1960, 92465), (2450, 73972), (4900, 36986), (9800, 18493)]