21698677

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{53}}^1\times {\mathrm{409}}^1$

素因数の和:493

約数の個数: 32

約数和(自身を含む): 29756160

約数和(自身を除く): 8057483

約数列:

[1, 7, 11, 13, 53, 77, 91, 143, 371, 409, 583, 689, 1001, 2863, 4081, 4499, 4823, 5317, 7579, 21677, 31493, 37219, 53053, 58487, 151739, 238447, 281801, 409409, 1669129, 1972607, 3099811, 21698677]

約数ペア:

[(1, 21698677), (7, 3099811), (11, 1972607), (13, 1669129), (53, 409409), (77, 281801), (91, 238447), (143, 151739), (371, 58487), (409, 53053), (583, 37219), (689, 31493), (1001, 21677), (2863, 7579), (4081, 5317), (4499, 4823)]