21136816

素因数分解:

$2^4\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{3023}}^1$

素因数の和:3073

約数の個数: 40

約数和(自身を含む): 44997120

約数和(自身を除く): 23860304

約数列:

[1, 2, 4, 8, 16, 19, 23, 38, 46, 76, 92, 152, 184, 304, 368, 437, 874, 1748, 3023, 3496, 6046, 6992, 12092, 24184, 48368, 57437, 69529, 114874, 139058, 229748, 278116, 459496, 556232, 918992, 1112464, 1321051, 2642102, 5284204, 10568408, 21136816]

約数ペア:

[(1, 21136816), (2, 10568408), (4, 5284204), (8, 2642102), (16, 1321051), (19, 1112464), (23, 918992), (38, 556232), (46, 459496), (76, 278116), (92, 229748), (152, 139058), (184, 114874), (304, 69529), (368, 57437), (437, 48368), (874, 24184), (1748, 12092), (3023, 6992), (3496, 6046)]