640356

素因数分解:

$2^2\times 3^1\times {\mathrm{17}}^1\times {\mathrm{43}}^1\times {\mathrm{73}}^1$

素因数の和:140

約数の個数: 48

約数和(自身を含む): 1641024

約数和(自身を除く): 1000668

約数列:

[1, 2, 3, 4, 6, 12, 17, 34, 43, 51, 68, 73, 86, 102, 129, 146, 172, 204, 219, 258, 292, 438, 516, 731, 876, 1241, 1462, 2193, 2482, 2924, 3139, 3723, 4386, 4964, 6278, 7446, 8772, 9417, 12556, 14892, 18834, 37668, 53363, 106726, 160089, 213452, 320178, 640356]

約数ペア:

[(1, 640356), (2, 320178), (3, 213452), (4, 160089), (6, 106726), (12, 53363), (17, 37668), (34, 18834), (43, 14892), (51, 12556), (68, 9417), (73, 8772), (86, 7446), (102, 6278), (129, 4964), (146, 4386), (172, 3723), (204, 3139), (219, 2924), (258, 2482), (292, 2193), (438, 1462), (516, 1241), (731, 876)]