389660780

素因数分解:

$2^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{71}}^1\times {\mathrm{4651}}^1$

素因数の和:4790

約数の個数: 48

約数和(自身を含む): 844058880

約数和(自身を除く): 454398100

約数列:

[1, 2, 4, 5, 10, 20, 59, 71, 118, 142, 236, 284, 295, 355, 590, 710, 1180, 1420, 4189, 4651, 8378, 9302, 16756, 18604, 20945, 23255, 41890, 46510, 83780, 93020, 274409, 330221, 548818, 660442, 1097636, 1320884, 1372045, 1651105, 2744090, 3302210, 5488180, 6604420, 19483039, 38966078, 77932156, 97415195, 194830390, 389660780]

約数ペア:

[(1, 389660780), (2, 194830390), (4, 97415195), (5, 77932156), (10, 38966078), (20, 19483039), (59, 6604420), (71, 5488180), (118, 3302210), (142, 2744090), (236, 1651105), (284, 1372045), (295, 1320884), (355, 1097636), (590, 660442), (710, 548818), (1180, 330221), (1420, 274409), (4189, 93020), (4651, 83780), (8378, 46510), (9302, 41890), (16756, 23255), (18604, 20945)]