21538810

素因数分解:

$2^1\times 5^1\times {\mathrm{23}}^1\times {\mathrm{37}}^1\times {\mathrm{2531}}^1$

素因数の和:2598

約数の個数: 32

約数和(自身を含む): 41565312

約数和(自身を除く): 20026502

約数列:

[1, 2, 5, 10, 23, 37, 46, 74, 115, 185, 230, 370, 851, 1702, 2531, 4255, 5062, 8510, 12655, 25310, 58213, 93647, 116426, 187294, 291065, 468235, 582130, 936470, 2153881, 4307762, 10769405, 21538810]

約数ペア:

[(1, 21538810), (2, 10769405), (5, 4307762), (10, 2153881), (23, 936470), (37, 582130), (46, 468235), (74, 291065), (115, 187294), (185, 116426), (230, 93647), (370, 58213), (851, 25310), (1702, 12655), (2531, 8510), (4255, 5062)]