19809097

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{37}}^1\times {\mathrm{409}}^1$

素因数の和:481

約数の個数: 32

約数和(自身を含む): 26922240

約数和(自身を除く): 7113143

約数列:

[1, 7, 11, 17, 37, 77, 119, 187, 259, 407, 409, 629, 1309, 2849, 2863, 4403, 4499, 6919, 6953, 15133, 31493, 48433, 48671, 76483, 105931, 166463, 257261, 535381, 1165241, 1800827, 2829871, 19809097]

約数ペア:

[(1, 19809097), (7, 2829871), (11, 1800827), (17, 1165241), (37, 535381), (77, 257261), (119, 166463), (187, 105931), (259, 76483), (407, 48671), (409, 48433), (629, 31493), (1309, 15133), (2849, 6953), (2863, 6919), (4403, 4499)]