21086756680

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{47924447}}^1$

素因数の和:47924469

約数の個数: 32

約数和(自身を含む): 51758403840

約数和(自身を除く): 30671647160

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 47924447, 95848894, 191697788, 239622235, 383395576, 479244470, 527168917, 958488940, 1054337834, 1916977880, 2108675668, 2635844585, 4217351336, 5271689170, 10543378340, 21086756680]

約数ペア:

[(1, 21086756680), (2, 10543378340), (4, 5271689170), (5, 4217351336), (8, 2635844585), (10, 2108675668), (11, 1916977880), (20, 1054337834), (22, 958488940), (40, 527168917), (44, 479244470), (55, 383395576), (88, 239622235), (110, 191697788), (220, 95848894), (440, 47924447)]