21689690

素因数分解:

$2^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{8573}}^1$

素因数の和:8614

約数の個数: 32

約数和(自身を含む): 44447616

約数和(自身を除く): 22757926

約数列:

[1, 2, 5, 10, 11, 22, 23, 46, 55, 110, 115, 230, 253, 506, 1265, 2530, 8573, 17146, 42865, 85730, 94303, 188606, 197179, 394358, 471515, 943030, 985895, 1971790, 2168969, 4337938, 10844845, 21689690]

約数ペア:

[(1, 21689690), (2, 10844845), (5, 4337938), (10, 2168969), (11, 1971790), (22, 985895), (23, 943030), (46, 471515), (55, 394358), (110, 197179), (115, 188606), (230, 94303), (253, 85730), (506, 42865), (1265, 17146), (2530, 8573)]