18991596

素因数分解:

$2^2\times 3^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{2297}}^1$

素因数の和:2370

約数の個数: 48

約数和(自身を含む): 48644064

約数和(自身を除く): 29652468

約数列:

[1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 53, 78, 106, 156, 159, 212, 318, 636, 689, 1378, 2067, 2297, 2756, 4134, 4594, 6891, 8268, 9188, 13782, 27564, 29861, 59722, 89583, 119444, 121741, 179166, 243482, 358332, 365223, 486964, 730446, 1460892, 1582633, 3165266, 4747899, 6330532, 9495798, 18991596]

約数ペア:

[(1, 18991596), (2, 9495798), (3, 6330532), (4, 4747899), (6, 3165266), (12, 1582633), (13, 1460892), (26, 730446), (39, 486964), (52, 365223), (53, 358332), (78, 243482), (106, 179166), (156, 121741), (159, 119444), (212, 89583), (318, 59722), (636, 29861), (689, 27564), (1378, 13782), (2067, 9188), (2297, 8268), (2756, 6891), (4134, 4594)]