18990728

素因数分解:

$2^3\times {\mathrm{19}}^1\times {\mathrm{103}}^1\times {\mathrm{1213}}^1$

素因数の和:1341

約数の個数: 32

約数和(自身を含む): 37876800

約数和(自身を除く): 18886072

約数列:

[1, 2, 4, 8, 19, 38, 76, 103, 152, 206, 412, 824, 1213, 1957, 2426, 3914, 4852, 7828, 9704, 15656, 23047, 46094, 92188, 124939, 184376, 249878, 499756, 999512, 2373841, 4747682, 9495364, 18990728]

約数ペア:

[(1, 18990728), (2, 9495364), (4, 4747682), (8, 2373841), (19, 999512), (38, 499756), (76, 249878), (103, 184376), (152, 124939), (206, 92188), (412, 46094), (824, 23047), (1213, 15656), (1957, 9704), (2426, 7828), (3914, 4852)]