21723020

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^1\times {\mathrm{293}}^1\times {\mathrm{337}}^1$

素因数の和:650

約数の個数: 48

約数和(自身を含む): 50083488

約数和(自身を除く): 28360468

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 293, 337, 586, 674, 1172, 1348, 1465, 1685, 2930, 3223, 3370, 3707, 5860, 6446, 6740, 7414, 12892, 14828, 16115, 18535, 32230, 37070, 64460, 74140, 98741, 197482, 394964, 493705, 987410, 1086151, 1974820, 2172302, 4344604, 5430755, 10861510, 21723020]

約数ペア:

[(1, 21723020), (2, 10861510), (4, 5430755), (5, 4344604), (10, 2172302), (11, 1974820), (20, 1086151), (22, 987410), (44, 493705), (55, 394964), (110, 197482), (220, 98741), (293, 74140), (337, 64460), (586, 37070), (674, 32230), (1172, 18535), (1348, 16115), (1465, 14828), (1685, 12892), (2930, 7414), (3223, 6740), (3370, 6446), (3707, 5860)]