20004580520

素因数分解:

$2^3\times 5^1\times {\mathrm{6353}}^1\times {\mathrm{78721}}^1$

素因数の和:85085

約数の個数: 32

約数和(自身を含む): 45017962920

約数和(自身を除く): 25013382400

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 6353, 12706, 25412, 31765, 50824, 63530, 78721, 127060, 157442, 254120, 314884, 393605, 629768, 787210, 1574420, 3148840, 500114513, 1000229026, 2000458052, 2500572565, 4000916104, 5001145130, 10002290260, 20004580520]

約数ペア:

[(1, 20004580520), (2, 10002290260), (4, 5001145130), (5, 4000916104), (8, 2500572565), (10, 2000458052), (20, 1000229026), (40, 500114513), (6353, 3148840), (12706, 1574420), (25412, 787210), (31765, 629768), (50824, 393605), (63530, 314884), (78721, 254120), (127060, 157442)]