30942520

素因数分解:

$2^3\times 5^1\times 7^2\times {\mathrm{15787}}^1$

素因数の和:15812

約数の個数: 48

約数和(自身を含む): 80992440

約数和(自身を除く): 50049920

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 49, 56, 70, 98, 140, 196, 245, 280, 392, 490, 980, 1960, 15787, 31574, 63148, 78935, 110509, 126296, 157870, 221018, 315740, 442036, 552545, 631480, 773563, 884072, 1105090, 1547126, 2210180, 3094252, 3867815, 4420360, 6188504, 7735630, 15471260, 30942520]

約数ペア:

[(1, 30942520), (2, 15471260), (4, 7735630), (5, 6188504), (7, 4420360), (8, 3867815), (10, 3094252), (14, 2210180), (20, 1547126), (28, 1105090), (35, 884072), (40, 773563), (49, 631480), (56, 552545), (70, 442036), (98, 315740), (140, 221018), (196, 157870), (245, 126296), (280, 110509), (392, 78935), (490, 63148), (980, 31574), (1960, 15787)]