81980368

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{197}}^1\times {\mathrm{839}}^1$

素因数の和:1075

約数の個数: 40

約数和(自身を含む): 164989440

約数和(自身を除く): 83009072

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 197, 248, 394, 496, 788, 839, 1576, 1678, 3152, 3356, 6107, 6712, 12214, 13424, 24428, 26009, 48856, 52018, 97712, 104036, 165283, 208072, 330566, 416144, 661132, 1322264, 2644528, 5123773, 10247546, 20495092, 40990184, 81980368]

約数ペア:

[(1, 81980368), (2, 40990184), (4, 20495092), (8, 10247546), (16, 5123773), (31, 2644528), (62, 1322264), (124, 661132), (197, 416144), (248, 330566), (394, 208072), (496, 165283), (788, 104036), (839, 97712), (1576, 52018), (1678, 48856), (3152, 26009), (3356, 24428), (6107, 13424), (6712, 12214)]