99990760

素因数分解:

$2^3\times 5^1\times {\mathrm{983}}^1\times {\mathrm{2543}}^1$

素因数の和:3537

約数の個数: 32

約数和(自身を含む): 225296640

約数和(自身を除く): 125305880

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 983, 1966, 2543, 3932, 4915, 5086, 7864, 9830, 10172, 12715, 19660, 20344, 25430, 39320, 50860, 101720, 2499769, 4999538, 9999076, 12498845, 19998152, 24997690, 49995380, 99990760]

約数ペア:

[(1, 99990760), (2, 49995380), (4, 24997690), (5, 19998152), (8, 12498845), (10, 9999076), (20, 4999538), (40, 2499769), (983, 101720), (1966, 50860), (2543, 39320), (3932, 25430), (4915, 20344), (5086, 19660), (7864, 12715), (9830, 10172)]