20610440

素因数分解:

$2^3\times 5^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{577}}^1$

素因数の和:654

約数の個数: 64

約数和(自身を含む): 49939200

約数和(自身を除く): 29328760

約数列:

[1, 2, 4, 5, 8, 10, 19, 20, 38, 40, 47, 76, 94, 95, 152, 188, 190, 235, 376, 380, 470, 577, 760, 893, 940, 1154, 1786, 1880, 2308, 2885, 3572, 4465, 4616, 5770, 7144, 8930, 10963, 11540, 17860, 21926, 23080, 27119, 35720, 43852, 54238, 54815, 87704, 108476, 109630, 135595, 216952, 219260, 271190, 438520, 515261, 542380, 1030522, 1084760, 2061044, 2576305, 4122088, 5152610, 10305220, 20610440]

約数ペア:

[(1, 20610440), (2, 10305220), (4, 5152610), (5, 4122088), (8, 2576305), (10, 2061044), (19, 1084760), (20, 1030522), (38, 542380), (40, 515261), (47, 438520), (76, 271190), (94, 219260), (95, 216952), (152, 135595), (188, 109630), (190, 108476), (235, 87704), (376, 54815), (380, 54238), (470, 43852), (577, 35720), (760, 27119), (893, 23080), (940, 21926), (1154, 17860), (1786, 11540), (1880, 10963), (2308, 8930), (2885, 7144), (3572, 5770), (4465, 4616)]