8816780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{71}}^1\times {\mathrm{887}}^1$

素因数の和:974

約数の個数: 48

約数和(自身を含む): 21482496

約数和(自身を除く): 12665716

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 71, 140, 142, 284, 355, 497, 710, 887, 994, 1420, 1774, 1988, 2485, 3548, 4435, 4970, 6209, 8870, 9940, 12418, 17740, 24836, 31045, 62090, 62977, 124180, 125954, 251908, 314885, 440839, 629770, 881678, 1259540, 1763356, 2204195, 4408390, 8816780]

約数ペア:

[(1, 8816780), (2, 4408390), (4, 2204195), (5, 1763356), (7, 1259540), (10, 881678), (14, 629770), (20, 440839), (28, 314885), (35, 251908), (70, 125954), (71, 124180), (140, 62977), (142, 62090), (284, 31045), (355, 24836), (497, 17740), (710, 12418), (887, 9940), (994, 8870), (1420, 6209), (1774, 4970), (1988, 4435), (2485, 3548)]