20198577

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{31}}^1\times {\mathrm{71}}^1$

素因数の和:154

約数の個数: 64

約数和(自身を含む): 35389440

約数和(自身を除く): 15190863

約数列:

[1, 3, 7, 19, 21, 23, 31, 57, 69, 71, 93, 133, 161, 213, 217, 399, 437, 483, 497, 589, 651, 713, 1311, 1349, 1491, 1633, 1767, 2139, 2201, 3059, 4047, 4123, 4899, 4991, 6603, 9177, 9443, 11431, 12369, 13547, 14973, 15407, 28329, 31027, 34293, 40641, 41819, 46221, 50623, 93081, 94829, 125457, 151869, 217189, 284487, 292733, 354361, 651567, 878199, 961837, 1063083, 2885511, 6732859, 20198577]

約数ペア:

[(1, 20198577), (3, 6732859), (7, 2885511), (19, 1063083), (21, 961837), (23, 878199), (31, 651567), (57, 354361), (69, 292733), (71, 284487), (93, 217189), (133, 151869), (161, 125457), (213, 94829), (217, 93081), (399, 50623), (437, 46221), (483, 41819), (497, 40641), (589, 34293), (651, 31027), (713, 28329), (1311, 15407), (1349, 14973), (1491, 13547), (1633, 12369), (1767, 11431), (2139, 9443), (2201, 9177), (3059, 6603), (4047, 4991), (4123, 4899)]