20911072

素因数分解:

$2^5\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{167}}^1$

素因数の和:240

約数の個数: 96

約数和(自身を含む): 52157952

約数和(自身を除く): 31246880

約数列:

[1, 2, 4, 7, 8, 13, 14, 16, 26, 28, 32, 43, 52, 56, 86, 91, 104, 112, 167, 172, 182, 208, 224, 301, 334, 344, 364, 416, 559, 602, 668, 688, 728, 1118, 1169, 1204, 1336, 1376, 1456, 2171, 2236, 2338, 2408, 2672, 2912, 3913, 4342, 4472, 4676, 4816, 5344, 7181, 7826, 8684, 8944, 9352, 9632, 14362, 15197, 15652, 17368, 17888, 18704, 28724, 30394, 31304, 34736, 37408, 50267, 57448, 60788, 62608, 69472, 93353, 100534, 114896, 121576, 125216, 186706, 201068, 229792, 243152, 373412, 402136, 486304, 653471, 746824, 804272, 1306942, 1493648, 1608544, 2613884, 2987296, 5227768, 10455536, 20911072]

約数ペア:

[(1, 20911072), (2, 10455536), (4, 5227768), (7, 2987296), (8, 2613884), (13, 1608544), (14, 1493648), (16, 1306942), (26, 804272), (28, 746824), (32, 653471), (43, 486304), (52, 402136), (56, 373412), (86, 243152), (91, 229792), (104, 201068), (112, 186706), (167, 125216), (172, 121576), (182, 114896), (208, 100534), (224, 93353), (301, 69472), (334, 62608), (344, 60788), (364, 57448), (416, 50267), (559, 37408), (602, 34736), (668, 31304), (688, 30394), (728, 28724), (1118, 18704), (1169, 17888), (1204, 17368), (1336, 15652), (1376, 15197), (1456, 14362), (2171, 9632), (2236, 9352), (2338, 8944), (2408, 8684), (2672, 7826), (2912, 7181), (3913, 5344), (4342, 4816), (4472, 4676)]