65616640

素因数分解:

$2^8\times 5^1\times {\mathrm{51263}}^1$

素因数の和:51284

約数の個数: 36

約数和(自身を含む): 157175424

約数和(自身を除く): 91558784

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 256, 320, 640, 1280, 51263, 102526, 205052, 256315, 410104, 512630, 820208, 1025260, 1640416, 2050520, 3280832, 4101040, 6561664, 8202080, 13123328, 16404160, 32808320, 65616640]

約数ペア:

[(1, 65616640), (2, 32808320), (4, 16404160), (5, 13123328), (8, 8202080), (10, 6561664), (16, 4101040), (20, 3280832), (32, 2050520), (40, 1640416), (64, 1025260), (80, 820208), (128, 512630), (160, 410104), (256, 256315), (320, 205052), (640, 102526), (1280, 51263)]