20177777079

素因数分解:

$3^4\times {\mathrm{491}}^1\times {\mathrm{507349}}^1$

素因数の和:507852

約数の個数: 20

約数和(自身を含む): 30203560200

約数和(自身を除く): 10025783121

約数列:

[1, 3, 9, 27, 81, 491, 1473, 4419, 13257, 39771, 507349, 1522047, 4566141, 13698423, 41095269, 249108359, 747325077, 2241975231, 6725925693, 20177777079]

約数ペア:

[(1, 20177777079), (3, 6725925693), (9, 2241975231), (27, 747325077), (81, 249108359), (491, 41095269), (1473, 13698423), (4419, 4566141), (13257, 1522047), (39771, 507349)]