399304728

素因数分解:

$2^3\times 3^4\times {\mathrm{616211}}^1$

素因数の和:616229

約数の個数: 40

約数和(自身を含む): 1118424780

約数和(自身を除く): 719120052

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 81, 108, 162, 216, 324, 648, 616211, 1232422, 1848633, 2464844, 3697266, 4929688, 5545899, 7394532, 11091798, 14789064, 16637697, 22183596, 33275394, 44367192, 49913091, 66550788, 99826182, 133101576, 199652364, 399304728]

約数ペア:

[(1, 399304728), (2, 199652364), (3, 133101576), (4, 99826182), (6, 66550788), (8, 49913091), (9, 44367192), (12, 33275394), (18, 22183596), (24, 16637697), (27, 14789064), (36, 11091798), (54, 7394532), (72, 5545899), (81, 4929688), (108, 3697266), (162, 2464844), (216, 1848633), (324, 1232422), (648, 616211)]