19997296

素因数分解:

$2^4\times {\mathrm{11}}^1\times {\mathrm{113621}}^1$

素因数の和:113640

約数の個数: 20

約数和(自身を含む): 42267384

約数和(自身を除く): 22270088

約数列:

[1, 2, 4, 8, 11, 16, 22, 44, 88, 176, 113621, 227242, 454484, 908968, 1249831, 1817936, 2499662, 4999324, 9998648, 19997296]

約数ペア:

[(1, 19997296), (2, 9998648), (4, 4999324), (8, 2499662), (11, 1817936), (16, 1249831), (22, 908968), (44, 454484), (88, 227242), (176, 113621)]