917078980

素因数分解:

$2^2\times 5^1\times {\mathrm{41}}^1\times {\mathrm{401}}^1\times {\mathrm{2789}}^1$

素因数の和:3240

約数の個数: 48

約数和(自身を含む): 1978467120

約数和(自身を除く): 1061388140

約数列:

[1, 2, 4, 5, 10, 20, 41, 82, 164, 205, 401, 410, 802, 820, 1604, 2005, 2789, 4010, 5578, 8020, 11156, 13945, 16441, 27890, 32882, 55780, 65764, 82205, 114349, 164410, 228698, 328820, 457396, 571745, 1118389, 1143490, 2236778, 2286980, 4473556, 5591945, 11183890, 22367780, 45853949, 91707898, 183415796, 229269745, 458539490, 917078980]

約数ペア:

[(1, 917078980), (2, 458539490), (4, 229269745), (5, 183415796), (10, 91707898), (20, 45853949), (41, 22367780), (82, 11183890), (164, 5591945), (205, 4473556), (401, 2286980), (410, 2236778), (802, 1143490), (820, 1118389), (1604, 571745), (2005, 457396), (2789, 328820), (4010, 228698), (5578, 164410), (8020, 114349), (11156, 82205), (13945, 65764), (16441, 55780), (27890, 32882)]