19665722

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{71}}^1\times {\mathrm{197}}^1$

素因数の和:326

約数の個数: 32

約数和(自身を含む): 32503680

約数和(自身を除く): 12837958

約数列:

[1, 2, 19, 37, 38, 71, 74, 142, 197, 394, 703, 1349, 1406, 2627, 2698, 3743, 5254, 7289, 7486, 13987, 14578, 27974, 49913, 99826, 138491, 265753, 276982, 517519, 531506, 1035038, 9832861, 19665722]

約数ペア:

[(1, 19665722), (2, 9832861), (19, 1035038), (37, 531506), (38, 517519), (71, 276982), (74, 265753), (142, 138491), (197, 99826), (394, 49913), (703, 27974), (1349, 14578), (1406, 13987), (2627, 7486), (2698, 7289), (3743, 5254)]