19760144

素因数分解:

$2^4\times {\mathrm{31}}^1\times {\mathrm{39839}}^1$

素因数の和:39878

約数の個数: 20

約数和(自身を含む): 39521280

約数和(自身を除く): 19761136

約数列:

[1, 2, 4, 8, 16, 31, 62, 124, 248, 496, 39839, 79678, 159356, 318712, 637424, 1235009, 2470018, 4940036, 9880072, 19760144]

約数ペア:

[(1, 19760144), (2, 9880072), (4, 4940036), (8, 2470018), (16, 1235009), (31, 637424), (62, 318712), (124, 159356), (248, 79678), (496, 39839)]