20418939

素因数分解:

$3^3\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{751}}^1$

素因数の和:832

約数の個数: 32

約数和(自身を含む): 32486400

約数和(自身を除く): 12067461

約数列:

[1, 3, 9, 19, 27, 53, 57, 159, 171, 477, 513, 751, 1007, 1431, 2253, 3021, 6759, 9063, 14269, 20277, 27189, 39803, 42807, 119409, 128421, 358227, 385263, 756257, 1074681, 2268771, 6806313, 20418939]

約数ペア:

[(1, 20418939), (3, 6806313), (9, 2268771), (19, 1074681), (27, 756257), (53, 385263), (57, 358227), (159, 128421), (171, 119409), (477, 42807), (513, 39803), (751, 27189), (1007, 20277), (1431, 14269), (2253, 9063), (3021, 6759)]