217823620

素因数分解:

$2^2\times 5^1\times 7^2\times {\mathrm{222269}}^1$

素因数の和:222292

約数の個数: 36

約数和(自身を含む): 532114380

約数和(自身を除く): 314290760

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 49, 70, 98, 140, 196, 245, 490, 980, 222269, 444538, 889076, 1111345, 1555883, 2222690, 3111766, 4445380, 6223532, 7779415, 10891181, 15558830, 21782362, 31117660, 43564724, 54455905, 108911810, 217823620]

約数ペア:

[(1, 217823620), (2, 108911810), (4, 54455905), (5, 43564724), (7, 31117660), (10, 21782362), (14, 15558830), (20, 10891181), (28, 7779415), (35, 6223532), (49, 4445380), (70, 3111766), (98, 2222690), (140, 1555883), (196, 1111345), (245, 889076), (490, 444538), (980, 222269)]