20001128

素因数分解:

$2^3\times 7^1\times {\mathrm{577}}^1\times {\mathrm{619}}^1$

素因数の和:1209

約数の個数: 32

約数和(自身を含む): 43003200

約数和(自身を除く): 23002072

約数列:

[1, 2, 4, 7, 8, 14, 28, 56, 577, 619, 1154, 1238, 2308, 2476, 4039, 4333, 4616, 4952, 8078, 8666, 16156, 17332, 32312, 34664, 357163, 714326, 1428652, 2500141, 2857304, 5000282, 10000564, 20001128]

約数ペア:

[(1, 20001128), (2, 10000564), (4, 5000282), (7, 2857304), (8, 2500141), (14, 1428652), (28, 714326), (56, 357163), (577, 34664), (619, 32312), (1154, 17332), (1238, 16156), (2308, 8666), (2476, 8078), (4039, 4952), (4333, 4616)]