20529704

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{307}}^1\times {\mathrm{643}}^1$

素因数の和:969

約数の個数: 32

約数和(自身を含む): 41653920

約数和(自身を除く): 21124216

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 307, 614, 643, 1228, 1286, 2456, 2572, 3991, 5144, 7982, 8359, 15964, 16718, 31928, 33436, 66872, 197401, 394802, 789604, 1579208, 2566213, 5132426, 10264852, 20529704]

約数ペア:

[(1, 20529704), (2, 10264852), (4, 5132426), (8, 2566213), (13, 1579208), (26, 789604), (52, 394802), (104, 197401), (307, 66872), (614, 33436), (643, 31928), (1228, 16718), (1286, 15964), (2456, 8359), (2572, 7982), (3991, 5144)]