638242563

素因数分解:

$3^1\times 7^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{17477}}^1$

素因数の和:17571

約数の個数: 32

約数和(自身を含む): 1020155904

約数和(自身を除く): 381913341

約数列:

[1, 3, 7, 21, 37, 47, 111, 141, 259, 329, 777, 987, 1739, 5217, 12173, 17477, 36519, 52431, 122339, 367017, 646649, 821419, 1939947, 2464257, 4526543, 5749933, 13579629, 17249799, 30392503, 91177509, 212747521, 638242563]

約数ペア:

[(1, 638242563), (3, 212747521), (7, 91177509), (21, 30392503), (37, 17249799), (47, 13579629), (111, 5749933), (141, 4526543), (259, 2464257), (329, 1939947), (777, 821419), (987, 646649), (1739, 367017), (5217, 122339), (12173, 52431), (17477, 36519)]