19987943907

素因数分解:

$3^1\times {\mathrm{41}}^1\times {\mathrm{67}}^1\times {\mathrm{617}}^1\times {\mathrm{3931}}^1$

素因数の和:4659

約数の個数: 32

約数和(自身を含む): 27760045824

約数和(自身を除く): 7772101917

約数列:

[1, 3, 41, 67, 123, 201, 617, 1851, 2747, 3931, 8241, 11793, 25297, 41339, 75891, 124017, 161171, 263377, 483513, 790131, 1694899, 2425427, 5084697, 7276281, 10798457, 32395371, 99442507, 162503609, 298327521, 487510827, 6662647969, 19987943907]

約数ペア:

[(1, 19987943907), (3, 6662647969), (41, 487510827), (67, 298327521), (123, 162503609), (201, 99442507), (617, 32395371), (1851, 10798457), (2747, 7276281), (3931, 5084697), (8241, 2425427), (11793, 1694899), (25297, 790131), (41339, 483513), (75891, 263377), (124017, 161171)]