21056554490

素因数分解:

$2^1\times 5^1\times {\mathrm{19}}^1\times {\mathrm{71}}^1\times {\mathrm{1560901}}^1$

素因数の和:1560998

約数の個数: 32

約数和(自身を含む): 40458579840

約数和(自身を除く): 19402025350

約数列:

[1, 2, 5, 10, 19, 38, 71, 95, 142, 190, 355, 710, 1349, 2698, 6745, 13490, 1560901, 3121802, 7804505, 15609010, 29657119, 59314238, 110823971, 148285595, 221647942, 296571190, 554119855, 1108239710, 2105655449, 4211310898, 10528277245, 21056554490]

約数ペア:

[(1, 21056554490), (2, 10528277245), (5, 4211310898), (10, 2105655449), (19, 1108239710), (38, 554119855), (71, 296571190), (95, 221647942), (142, 148285595), (190, 110823971), (355, 59314238), (710, 29657119), (1349, 15609010), (2698, 7804505), (6745, 3121802), (13490, 1560901)]