20735440

素因数分解:

$2^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23563}}^1$

素因数の和:23587

約数の個数: 40

約数和(自身を含む): 52594848

約数和(自身を除く): 31859408

約数列:

[1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 40, 44, 55, 80, 88, 110, 176, 220, 440, 880, 23563, 47126, 94252, 117815, 188504, 235630, 259193, 377008, 471260, 518386, 942520, 1036772, 1295965, 1885040, 2073544, 2591930, 4147088, 5183860, 10367720, 20735440]

約数ペア:

[(1, 20735440), (2, 10367720), (4, 5183860), (5, 4147088), (8, 2591930), (10, 2073544), (11, 1885040), (16, 1295965), (20, 1036772), (22, 942520), (40, 518386), (44, 471260), (55, 377008), (80, 259193), (88, 235630), (110, 188504), (176, 117815), (220, 94252), (440, 47126), (880, 23563)]