21122129

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{47}}^1\times {\mathrm{109}}^1$

素因数の和:213

約数の個数: 32

約数和(自身を含む): 27033600

約数和(自身を除く): 5911471

約数列:

[1, 7, 19, 31, 47, 109, 133, 217, 329, 589, 763, 893, 1457, 2071, 3379, 4123, 5123, 6251, 10199, 14497, 23653, 27683, 35861, 64201, 97337, 158813, 193781, 449407, 681359, 1111691, 3017447, 21122129]

約数ペア:

[(1, 21122129), (7, 3017447), (19, 1111691), (31, 681359), (47, 449407), (109, 193781), (133, 158813), (217, 97337), (329, 64201), (589, 35861), (763, 27683), (893, 23653), (1457, 14497), (2071, 10199), (3379, 6251), (4123, 5123)]