19396916

素因数分解:

$2^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{71}}^1\times {\mathrm{887}}^1$

素因数の和:980

約数の個数: 48

約数和(自身を含む): 42964992

約数和(自身を除く): 23568076

約数列:

[1, 2, 4, 7, 11, 14, 22, 28, 44, 71, 77, 142, 154, 284, 308, 497, 781, 887, 994, 1562, 1774, 1988, 3124, 3548, 5467, 6209, 9757, 10934, 12418, 19514, 21868, 24836, 39028, 62977, 68299, 125954, 136598, 251908, 273196, 440839, 692747, 881678, 1385494, 1763356, 2770988, 4849229, 9698458, 19396916]

約数ペア:

[(1, 19396916), (2, 9698458), (4, 4849229), (7, 2770988), (11, 1763356), (14, 1385494), (22, 881678), (28, 692747), (44, 440839), (71, 273196), (77, 251908), (142, 136598), (154, 125954), (284, 68299), (308, 62977), (497, 39028), (781, 24836), (887, 21868), (994, 19514), (1562, 12418), (1774, 10934), (1988, 9757), (3124, 6209), (3548, 5467)]