21085652

素因数分解:

$2^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{83}}^1\times {\mathrm{211}}^1$

素因数の和:348

約数の個数: 48

約数和(自身を含む): 43878912

約数和(自身を除く): 22793260

約数列:

[1, 2, 4, 7, 14, 28, 43, 83, 86, 166, 172, 211, 301, 332, 422, 581, 602, 844, 1162, 1204, 1477, 2324, 2954, 3569, 5908, 7138, 9073, 14276, 17513, 18146, 24983, 35026, 36292, 49966, 63511, 70052, 99932, 122591, 127022, 245182, 254044, 490364, 753059, 1506118, 3012236, 5271413, 10542826, 21085652]

約数ペア:

[(1, 21085652), (2, 10542826), (4, 5271413), (7, 3012236), (14, 1506118), (28, 753059), (43, 490364), (83, 254044), (86, 245182), (166, 127022), (172, 122591), (211, 99932), (301, 70052), (332, 63511), (422, 49966), (581, 36292), (602, 35026), (844, 24983), (1162, 18146), (1204, 17513), (1477, 14276), (2324, 9073), (2954, 7138), (3569, 5908)]