210317440

素因数分解:

$2^7\times 5^1\times {\mathrm{328621}}^1$

素因数の和:328640

約数の個数: 32

約数和(自身を含む): 502791660

約数和(自身を除く): 292474220

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640, 328621, 657242, 1314484, 1643105, 2628968, 3286210, 5257936, 6572420, 10515872, 13144840, 21031744, 26289680, 42063488, 52579360, 105158720, 210317440]

約数ペア:

[(1, 210317440), (2, 105158720), (4, 52579360), (5, 42063488), (8, 26289680), (10, 21031744), (16, 13144840), (20, 10515872), (32, 6572420), (40, 5257936), (64, 3286210), (80, 2628968), (128, 1643105), (160, 1314484), (320, 657242), (640, 328621)]