20191437

素因数分解:

$3^4\times 7^1\times {\mathrm{149}}^1\times {\mathrm{239}}^1$

素因数の和:407

約数の個数: 40

約数和(自身を含む): 34848000

約数和(自身を除く): 14656563

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 149, 189, 239, 447, 567, 717, 1043, 1341, 1673, 2151, 3129, 4023, 5019, 6453, 9387, 12069, 15057, 19359, 28161, 35611, 45171, 84483, 106833, 135513, 249277, 320499, 747831, 961497, 2243493, 2884491, 6730479, 20191437]

約数ペア:

[(1, 20191437), (3, 6730479), (7, 2884491), (9, 2243493), (21, 961497), (27, 747831), (63, 320499), (81, 249277), (149, 135513), (189, 106833), (239, 84483), (447, 45171), (567, 35611), (717, 28161), (1043, 19359), (1341, 15057), (1673, 12069), (2151, 9387), (3129, 6453), (4023, 5019)]