19621915

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1\times {\mathrm{1783}}^1$

素因数の和:1890

約数の個数: 16

約数和(自身を含む): 24662016

約数和(自身を除く): 5040101

約数列:

[1, 5, 31, 71, 155, 355, 1783, 2201, 8915, 11005, 55273, 126593, 276365, 632965, 3924383, 19621915]

約数ペア:

[(1, 19621915), (5, 3924383), (31, 632965), (71, 276365), (155, 126593), (355, 55273), (1783, 11005), (2201, 8915)]