20965196

素因数分解:

$2^2\times 7^1\times {\mathrm{47}}^1\times {\mathrm{89}}^1\times {\mathrm{179}}^1$

素因数の和:326

約数の個数: 48

約数和(自身を含む): 43545600

約数和(自身を除く): 22580404

約数列:

[1, 2, 4, 7, 14, 28, 47, 89, 94, 178, 179, 188, 329, 356, 358, 623, 658, 716, 1246, 1253, 1316, 2492, 2506, 4183, 5012, 8366, 8413, 15931, 16732, 16826, 29281, 31862, 33652, 58562, 58891, 63724, 111517, 117124, 117782, 223034, 235564, 446068, 748757, 1497514, 2995028, 5241299, 10482598, 20965196]

約数ペア:

[(1, 20965196), (2, 10482598), (4, 5241299), (7, 2995028), (14, 1497514), (28, 748757), (47, 446068), (89, 235564), (94, 223034), (178, 117782), (179, 117124), (188, 111517), (329, 63724), (356, 58891), (358, 58562), (623, 33652), (658, 31862), (716, 29281), (1246, 16826), (1253, 16732), (1316, 15931), (2492, 8413), (2506, 8366), (4183, 5012)]