197440640

素因数分解:

$2^7\times 5^1\times {\mathrm{308501}}^1$

素因数の和:308520

約数の個数: 32

約数和(自身を含む): 472008060

約数和(自身を除く): 274567420

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 308501, 617002, 1234004, 1542505, 2468008, 3085010, 4936016, 6170020, 9872032, 12340040, 19744064, 24680080, 39488128, 49360160, 98720320, 197440640]

約数ペア:

[(1, 197440640), (2, 98720320), (4, 49360160), (5, 39488128), (8, 24680080), (10, 19744064), (16, 12340040), (20, 9872032), (32, 6170020), (40, 4936016), (64, 3085010), (80, 2468008), (128, 1542505), (160, 1234004), (320, 617002), (640, 308501)]