199859620

素因数分解:

$2^2\times 5^1\times {\mathrm{1301}}^1\times {\mathrm{7681}}^1$

素因数の和:8991

約数の個数: 24

約数和(自身を含む): 420082488

約数和(自身を除く): 220222868

約数列:

[1, 2, 4, 5, 10, 20, 1301, 2602, 5204, 6505, 7681, 13010, 15362, 26020, 30724, 38405, 76810, 153620, 9992981, 19985962, 39971924, 49964905, 99929810, 199859620]

約数ペア:

[(1, 199859620), (2, 99929810), (4, 49964905), (5, 39971924), (10, 19985962), (20, 9992981), (1301, 153620), (2602, 76810), (5204, 38405), (6505, 30724), (7681, 26020), (13010, 15362)]