1680428

素因数分解:

$2^2\times {\mathrm{61}}^1\times {\mathrm{71}}^1\times {\mathrm{97}}^1$

素因数の和:233

約数の個数: 24

約数和(自身を含む): 3062304

約数和(自身を除く): 1381876

約数列:

[1, 2, 4, 61, 71, 97, 122, 142, 194, 244, 284, 388, 4331, 5917, 6887, 8662, 11834, 13774, 17324, 23668, 27548, 420107, 840214, 1680428]

約数ペア:

[(1, 1680428), (2, 840214), (4, 420107), (61, 27548), (71, 23668), (97, 17324), (122, 13774), (142, 11834), (194, 8662), (244, 6887), (284, 5917), (388, 4331)]