19396251

素因数分解:

$3^2\times 7^1\times {\mathrm{37}}^1\times {\mathrm{53}}^1\times {\mathrm{157}}^1$

素因数の和:260

約数の個数: 48

約数和(自身を含む): 33718464

約数和(自身を除く): 14322213

約数列:

[1, 3, 7, 9, 21, 37, 53, 63, 111, 157, 159, 259, 333, 371, 471, 477, 777, 1099, 1113, 1413, 1961, 2331, 3297, 3339, 5809, 5883, 8321, 9891, 13727, 17427, 17649, 24963, 40663, 41181, 52281, 58247, 74889, 121989, 123543, 174741, 307877, 365967, 524223, 923631, 2155139, 2770893, 6465417, 19396251]

約数ペア:

[(1, 19396251), (3, 6465417), (7, 2770893), (9, 2155139), (21, 923631), (37, 524223), (53, 365967), (63, 307877), (111, 174741), (157, 123543), (159, 121989), (259, 74889), (333, 58247), (371, 52281), (471, 41181), (477, 40663), (777, 24963), (1099, 17649), (1113, 17427), (1413, 13727), (1961, 9891), (2331, 8321), (3297, 5883), (3339, 5809)]