748349380

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{420421}}^1$

素因数の和:420519

約数の個数: 24

約数和(自身を含む): 1589195160

約数和(自身を除く): 840845780

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 445, 890, 1780, 420421, 840842, 1681684, 2102105, 4204210, 8408420, 37417469, 74834938, 149669876, 187087345, 374174690, 748349380]

約数ペア:

[(1, 748349380), (2, 374174690), (4, 187087345), (5, 149669876), (10, 74834938), (20, 37417469), (89, 8408420), (178, 4204210), (356, 2102105), (445, 1681684), (890, 840842), (1780, 420421)]