12931220

素因数分解:

$2^2\times 5^1\times {\mathrm{17}}^1\times {\mathrm{73}}^1\times {\mathrm{521}}^1$

素因数の和:620

約数の個数: 48

約数和(自身を含む): 29202768

約数和(自身を除く): 16271548

約数列:

[1, 2, 4, 5, 10, 17, 20, 34, 68, 73, 85, 146, 170, 292, 340, 365, 521, 730, 1042, 1241, 1460, 2084, 2482, 2605, 4964, 5210, 6205, 8857, 10420, 12410, 17714, 24820, 35428, 38033, 44285, 76066, 88570, 152132, 177140, 190165, 380330, 646561, 760660, 1293122, 2586244, 3232805, 6465610, 12931220]

約数ペア:

[(1, 12931220), (2, 6465610), (4, 3232805), (5, 2586244), (10, 1293122), (17, 760660), (20, 646561), (34, 380330), (68, 190165), (73, 177140), (85, 152132), (146, 88570), (170, 76066), (292, 44285), (340, 38033), (365, 35428), (521, 24820), (730, 17714), (1042, 12410), (1241, 10420), (1460, 8857), (2084, 6205), (2482, 5210), (2605, 4964)]