20739446

素因数分解:

$2^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{73}}^1\times {\mathrm{223}}^1$

素因数の和:325

約数の個数: 48

約数和(自身を含む): 39682944

約数和(自身を除く): 18943498

約数列:

[1, 2, 7, 13, 14, 26, 49, 73, 91, 98, 146, 182, 223, 446, 511, 637, 949, 1022, 1274, 1561, 1898, 2899, 3122, 3577, 5798, 6643, 7154, 10927, 13286, 16279, 20293, 21854, 32558, 40586, 46501, 93002, 113953, 142051, 211627, 227906, 284102, 423254, 797671, 1481389, 1595342, 2962778, 10369723, 20739446]

約数ペア:

[(1, 20739446), (2, 10369723), (7, 2962778), (13, 1595342), (14, 1481389), (26, 797671), (49, 423254), (73, 284102), (91, 227906), (98, 211627), (146, 142051), (182, 113953), (223, 93002), (446, 46501), (511, 40586), (637, 32558), (949, 21854), (1022, 20293), (1274, 16279), (1561, 13286), (1898, 10927), (2899, 7154), (3122, 6643), (3577, 5798)]