19798415

素因数分解:

$5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{821}}^1$

素因数の和:899

約数の個数: 32

約数和(自身を含む): 29828736

約数和(自身を除く): 10030321

約数列:

[1, 5, 7, 13, 35, 53, 65, 91, 265, 371, 455, 689, 821, 1855, 3445, 4105, 4823, 5747, 10673, 24115, 28735, 43513, 53365, 74711, 217565, 304591, 373555, 565669, 1522955, 2828345, 3959683, 19798415]

約数ペア:

[(1, 19798415), (5, 3959683), (7, 2828345), (13, 1522955), (35, 565669), (53, 373555), (65, 304591), (91, 217565), (265, 74711), (371, 53365), (455, 43513), (689, 28735), (821, 24115), (1855, 10673), (3445, 5747), (4105, 4823)]