256436620

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{223}}^1\times {\mathrm{5227}}^1$

素因数の和:5470

約数の個数: 48

約数和(自身を含む): 590220288

約数和(自身を除く): 333783668

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 223, 446, 892, 1115, 2230, 2453, 4460, 4906, 5227, 9812, 10454, 12265, 20908, 24530, 26135, 49060, 52270, 57497, 104540, 114994, 229988, 287485, 574970, 1149940, 1165621, 2331242, 4662484, 5828105, 11656210, 12821831, 23312420, 25643662, 51287324, 64109155, 128218310, 256436620]

約数ペア:

[(1, 256436620), (2, 128218310), (4, 64109155), (5, 51287324), (10, 25643662), (11, 23312420), (20, 12821831), (22, 11656210), (44, 5828105), (55, 4662484), (110, 2331242), (220, 1165621), (223, 1149940), (446, 574970), (892, 287485), (1115, 229988), (2230, 114994), (2453, 104540), (4460, 57497), (4906, 52270), (5227, 49060), (9812, 26135), (10454, 24530), (12265, 20908)]