1291091780

素因数分解:

$2^2\times 5^1\times {\mathrm{11}}^2\times {\mathrm{533509}}^1$

素因数の和:533540

約数の個数: 36

約数和(自身を含む): 2980186860

約数和(自身を除く): 1689095080

約数列:

[1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 121, 220, 242, 484, 605, 1210, 2420, 533509, 1067018, 2134036, 2667545, 5335090, 5868599, 10670180, 11737198, 23474396, 29342995, 58685990, 64554589, 117371980, 129109178, 258218356, 322772945, 645545890, 1291091780]

約数ペア:

[(1, 1291091780), (2, 645545890), (4, 322772945), (5, 258218356), (10, 129109178), (11, 117371980), (20, 64554589), (22, 58685990), (44, 29342995), (55, 23474396), (110, 11737198), (121, 10670180), (220, 5868599), (242, 5335090), (484, 2667545), (605, 2134036), (1210, 1067018), (2420, 533509)]