257446720

素因数分解:

$2^6\times 5^1\times {\mathrm{804521}}^1$

素因数の和:804538

約数の個数: 28

約数和(自身を含む): 613045764

約数和(自身を除く): 355599044

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 804521, 1609042, 3218084, 4022605, 6436168, 8045210, 12872336, 16090420, 25744672, 32180840, 51489344, 64361680, 128723360, 257446720]

約数ペア:

[(1, 257446720), (2, 128723360), (4, 64361680), (5, 51489344), (8, 32180840), (10, 25744672), (16, 16090420), (20, 12872336), (32, 8045210), (40, 6436168), (64, 4022605), (80, 3218084), (160, 1609042), (320, 804521)]