213874465

素因数分解:

$5^1\times 7^2\times {\mathrm{313}}^1\times {\mathrm{2789}}^1$

素因数の和:3121

約数の個数: 24

約数和(自身を含む): 299612520

約数和(自身を除く): 85738055

約数列:

[1, 5, 7, 35, 49, 245, 313, 1565, 2191, 2789, 10955, 13945, 15337, 19523, 76685, 97615, 136661, 683305, 872957, 4364785, 6110699, 30553495, 42774893, 213874465]

約数ペア:

[(1, 213874465), (5, 42774893), (7, 30553495), (35, 6110699), (49, 4364785), (245, 872957), (313, 683305), (1565, 136661), (2191, 97615), (2789, 76685), (10955, 19523), (13945, 15337)]