20821454

素因数分解:

$2^1\times {\mathrm{19}}^1\times {\mathrm{37}}^1\times {\mathrm{59}}^1\times {\mathrm{251}}^1$

素因数の和:368

約数の個数: 32

約数和(自身を含む): 34473600

約数和(自身を除く): 13652146

約数列:

[1, 2, 19, 37, 38, 59, 74, 118, 251, 502, 703, 1121, 1406, 2183, 2242, 4366, 4769, 9287, 9538, 14809, 18574, 29618, 41477, 82954, 176453, 281371, 352906, 547933, 562742, 1095866, 10410727, 20821454]

約数ペア:

[(1, 20821454), (2, 10410727), (19, 1095866), (37, 562742), (38, 547933), (59, 352906), (74, 281371), (118, 176453), (251, 82954), (502, 41477), (703, 29618), (1121, 18574), (1406, 14809), (2183, 9538), (2242, 9287), (4366, 4769)]