21580390

素因数分解:

$2^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{8737}}^1$

素因数の和:8776

約数の個数: 32

約数和(自身を含む): 44039520

約数和(自身を除く): 22459130

約数列:

[1, 2, 5, 10, 13, 19, 26, 38, 65, 95, 130, 190, 247, 494, 1235, 2470, 8737, 17474, 43685, 87370, 113581, 166003, 227162, 332006, 567905, 830015, 1135810, 1660030, 2158039, 4316078, 10790195, 21580390]

約数ペア:

[(1, 21580390), (2, 10790195), (5, 4316078), (10, 2158039), (13, 1660030), (19, 1135810), (26, 830015), (38, 567905), (65, 332006), (95, 227162), (130, 166003), (190, 113581), (247, 87370), (494, 43685), (1235, 17474), (2470, 8737)]