21000866824

素因数分解:

$2^3\times 7^1\times {\mathrm{41}}^1\times {\mathrm{853}}^1\times {\mathrm{10723}}^1$

素因数の和:11630

約数の個数: 64

約数和(自身を含む): 46157811840

約数和(自身を除く): 25156945016

約数列:

[1, 2, 4, 7, 8, 14, 28, 41, 56, 82, 164, 287, 328, 574, 853, 1148, 1706, 2296, 3412, 5971, 6824, 10723, 11942, 21446, 23884, 34973, 42892, 47768, 69946, 75061, 85784, 139892, 150122, 244811, 279784, 300244, 439643, 489622, 600488, 879286, 979244, 1758572, 1958488, 3077501, 3517144, 6155002, 9146719, 12310004, 18293438, 24620008, 36586876, 64027033, 73173752, 128054066, 256108132, 375015479, 512216264, 750030958, 1500061916, 2625108353, 3000123832, 5250216706, 10500433412, 21000866824]

約数ペア:

[(1, 21000866824), (2, 10500433412), (4, 5250216706), (7, 3000123832), (8, 2625108353), (14, 1500061916), (28, 750030958), (41, 512216264), (56, 375015479), (82, 256108132), (164, 128054066), (287, 73173752), (328, 64027033), (574, 36586876), (853, 24620008), (1148, 18293438), (1706, 12310004), (2296, 9146719), (3412, 6155002), (5971, 3517144), (6824, 3077501), (10723, 1958488), (11942, 1758572), (21446, 979244), (23884, 879286), (34973, 600488), (42892, 489622), (47768, 439643), (69946, 300244), (75061, 279784), (85784, 244811), (139892, 150122)]