20720556

素因数分解:

$2^2\times 3^3\times {\mathrm{173}}^1\times {\mathrm{1109}}^1$

素因数の和:1295

約数の個数: 48

約数和(自身を含む): 54079200

約数和(自身を除く): 33358644

約数列:

[1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 108, 173, 346, 519, 692, 1038, 1109, 1557, 2076, 2218, 3114, 3327, 4436, 4671, 6228, 6654, 9342, 9981, 13308, 18684, 19962, 29943, 39924, 59886, 119772, 191857, 383714, 575571, 767428, 1151142, 1726713, 2302284, 3453426, 5180139, 6906852, 10360278, 20720556]

約数ペア:

[(1, 20720556), (2, 10360278), (3, 6906852), (4, 5180139), (6, 3453426), (9, 2302284), (12, 1726713), (18, 1151142), (27, 767428), (36, 575571), (54, 383714), (108, 191857), (173, 119772), (346, 59886), (519, 39924), (692, 29943), (1038, 19962), (1109, 18684), (1557, 13308), (2076, 9981), (2218, 9342), (3114, 6654), (3327, 6228), (4436, 4671)]