388144520

素因数分解:

$2^3\times 5^1\times {\mathrm{83}}^1\times {\mathrm{116911}}^1$

素因数の和:117005

約数の個数: 32

約数和(自身を含む): 883854720

約数和(自身を除く): 495710200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 83, 166, 332, 415, 664, 830, 1660, 3320, 116911, 233822, 467644, 584555, 935288, 1169110, 2338220, 4676440, 9703613, 19407226, 38814452, 48518065, 77628904, 97036130, 194072260, 388144520]

約数ペア:

[(1, 388144520), (2, 194072260), (4, 97036130), (5, 77628904), (8, 48518065), (10, 38814452), (20, 19407226), (40, 9703613), (83, 4676440), (166, 2338220), (332, 1169110), (415, 935288), (664, 584555), (830, 467644), (1660, 233822), (3320, 116911)]