51201780

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{121909}}^1$

素因数の和:121928

約数の個数: 48

約数和(自身を含む): 163847040

約数和(自身を除く): 112645260

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 121909, 243818, 365727, 487636, 609545, 731454, 853363, 1219090, 1462908, 1706726, 1828635, 2438180, 2560089, 3413452, 3657270, 4266815, 5120178, 7314540, 8533630, 10240356, 12800445, 17067260, 25600890, 51201780]

約数ペア:

[(1, 51201780), (2, 25600890), (3, 17067260), (4, 12800445), (5, 10240356), (6, 8533630), (7, 7314540), (10, 5120178), (12, 4266815), (14, 3657270), (15, 3413452), (20, 2560089), (21, 2438180), (28, 1828635), (30, 1706726), (35, 1462908), (42, 1219090), (60, 853363), (70, 731454), (84, 609545), (105, 487636), (140, 365727), (210, 243818), (420, 121909)]