64646720

素因数分解:

$2^6\times 5^1\times {\mathrm{202021}}^1$

素因数の和:202038

約数の個数: 28

約数和(自身を含む): 153940764

約数和(自身を除く): 89294044

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 202021, 404042, 808084, 1010105, 1616168, 2020210, 3232336, 4040420, 6464672, 8080840, 12929344, 16161680, 32323360, 64646720]

約数ペア:

[(1, 64646720), (2, 32323360), (4, 16161680), (5, 12929344), (8, 8080840), (10, 6464672), (16, 4040420), (20, 3232336), (32, 2020210), (40, 1616168), (64, 1010105), (80, 808084), (160, 404042), (320, 202021)]