19989916

素因数分解:

$2^2\times {\mathrm{31}}^1\times {\mathrm{37}}^1\times {\mathrm{4357}}^1$

素因数の和:4429

約数の個数: 24

約数和(自身を含む): 37095296

約数和(自身を除く): 17105380

約数列:

[1, 2, 4, 31, 37, 62, 74, 124, 148, 1147, 2294, 4357, 4588, 8714, 17428, 135067, 161209, 270134, 322418, 540268, 644836, 4997479, 9994958, 19989916]

約数ペア:

[(1, 19989916), (2, 9994958), (4, 4997479), (31, 644836), (37, 540268), (62, 322418), (74, 270134), (124, 161209), (148, 135067), (1147, 17428), (2294, 8714), (4357, 4588)]