21998384

素因数分解:

$2^4\times {\mathrm{179}}^1\times {\mathrm{7681}}^1$

素因数の和:7868

約数の個数: 20

約数和(自身を含む): 42865560

約数和(自身を除く): 20867176

約数列:

[1, 2, 4, 8, 16, 179, 358, 716, 1432, 2864, 7681, 15362, 30724, 61448, 122896, 1374899, 2749798, 5499596, 10999192, 21998384]

約数ペア:

[(1, 21998384), (2, 10999192), (4, 5499596), (8, 2749798), (16, 1374899), (179, 122896), (358, 61448), (716, 30724), (1432, 15362), (2864, 7681)]