20938616

素因数分解:

$2^3\times {\mathrm{61}}^1\times {\mathrm{107}}^1\times {\mathrm{401}}^1$

素因数の和:575

約数の個数: 32

約数和(自身を含む): 40376880

約数和(自身を除く): 19438264

約数列:

[1, 2, 4, 8, 61, 107, 122, 214, 244, 401, 428, 488, 802, 856, 1604, 3208, 6527, 13054, 24461, 26108, 42907, 48922, 52216, 85814, 97844, 171628, 195688, 343256, 2617327, 5234654, 10469308, 20938616]

約数ペア:

[(1, 20938616), (2, 10469308), (4, 5234654), (8, 2617327), (61, 343256), (107, 195688), (122, 171628), (214, 97844), (244, 85814), (401, 52216), (428, 48922), (488, 42907), (802, 26108), (856, 24461), (1604, 13054), (3208, 6527)]