21139685

素因数分解:

$5^1\times 7^1\times {\mathrm{19}}^1\times {\mathrm{83}}^1\times {\mathrm{383}}^1$

素因数の和:497

約数の個数: 32

約数和(自身を含む): 30965760

約数和(自身を除く): 9826075

約数列:

[1, 5, 7, 19, 35, 83, 95, 133, 383, 415, 581, 665, 1577, 1915, 2681, 2905, 7277, 7885, 11039, 13405, 31789, 36385, 50939, 55195, 158945, 222523, 254695, 603991, 1112615, 3019955, 4227937, 21139685]

約数ペア:

[(1, 21139685), (5, 4227937), (7, 3019955), (19, 1112615), (35, 603991), (83, 254695), (95, 222523), (133, 158945), (383, 55195), (415, 50939), (581, 36385), (665, 31789), (1577, 13405), (1915, 11039), (2681, 7885), (2905, 7277)]