20977000

素因数分解:

$2^3\times 5^3\times {\mathrm{11}}^1\times {\mathrm{1907}}^1$

素因数の和:1939

約数の個数: 64

約数和(自身を含む): 53576640

約数和(自身を除く): 32599640

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 25, 40, 44, 50, 55, 88, 100, 110, 125, 200, 220, 250, 275, 440, 500, 550, 1000, 1100, 1375, 1907, 2200, 2750, 3814, 5500, 7628, 9535, 11000, 15256, 19070, 20977, 38140, 41954, 47675, 76280, 83908, 95350, 104885, 167816, 190700, 209770, 238375, 381400, 419540, 476750, 524425, 839080, 953500, 1048850, 1907000, 2097700, 2622125, 4195400, 5244250, 10488500, 20977000]

約数ペア:

[(1, 20977000), (2, 10488500), (4, 5244250), (5, 4195400), (8, 2622125), (10, 2097700), (11, 1907000), (20, 1048850), (22, 953500), (25, 839080), (40, 524425), (44, 476750), (50, 419540), (55, 381400), (88, 238375), (100, 209770), (110, 190700), (125, 167816), (200, 104885), (220, 95350), (250, 83908), (275, 76280), (440, 47675), (500, 41954), (550, 38140), (1000, 20977), (1100, 19070), (1375, 15256), (1907, 11000), (2200, 9535), (2750, 7628), (3814, 5500)]