199921160

素因数分解:

$2^3\times 5^1\times {\mathrm{349}}^1\times {\mathrm{14321}}^1$

素因数の和:14681

約数の個数: 32

約数和(自身を含む): 451143000

約数和(自身を除く): 251221840

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 349, 698, 1396, 1745, 2792, 3490, 6980, 13960, 14321, 28642, 57284, 71605, 114568, 143210, 286420, 572840, 4998029, 9996058, 19992116, 24990145, 39984232, 49980290, 99960580, 199921160]

約数ペア:

[(1, 199921160), (2, 99960580), (4, 49980290), (5, 39984232), (8, 24990145), (10, 19992116), (20, 9996058), (40, 4998029), (349, 572840), (698, 286420), (1396, 143210), (1745, 114568), (2792, 71605), (3490, 57284), (6980, 28642), (13960, 14321)]