21291240070

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{443}}^1\times {\mathrm{208963}}^1$

素因数の和:209436

約数の個数: 32

約数和(自身を含む): 40080966912

約数和(自身を除く): 18789726842

約数列:

[1, 2, 5, 10, 23, 46, 115, 230, 443, 886, 2215, 4430, 10189, 20378, 50945, 101890, 208963, 417926, 1044815, 2089630, 4806149, 9612298, 24030745, 48061490, 92570609, 185141218, 462853045, 925706090, 2129124007, 4258248014, 10645620035, 21291240070]

約数ペア:

[(1, 21291240070), (2, 10645620035), (5, 4258248014), (10, 2129124007), (23, 925706090), (46, 462853045), (115, 185141218), (230, 92570609), (443, 48061490), (886, 24030745), (2215, 9612298), (4430, 4806149), (10189, 2089630), (20378, 1044815), (50945, 417926), (101890, 208963)]