81171700

素因数分解:

$2^2\times 5^2\times {\mathrm{211}}^1\times {\mathrm{3847}}^1$

素因数の和:4072

約数の個数: 36

約数和(自身を含む): 177023392

約数和(自身を除く): 95851692

約数列:

[1, 2, 4, 5, 10, 20, 25, 50, 100, 211, 422, 844, 1055, 2110, 3847, 4220, 5275, 7694, 10550, 15388, 19235, 21100, 38470, 76940, 96175, 192350, 384700, 811717, 1623434, 3246868, 4058585, 8117170, 16234340, 20292925, 40585850, 81171700]

約数ペア:

[(1, 81171700), (2, 40585850), (4, 20292925), (5, 16234340), (10, 8117170), (20, 4058585), (25, 3246868), (50, 1623434), (100, 811717), (211, 384700), (422, 192350), (844, 96175), (1055, 76940), (2110, 38470), (3847, 21100), (4220, 19235), (5275, 15388), (7694, 10550)]