21760816

素因数分解:

$2^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{1039}}^1$

素因数の和:1082

約数の個数: 80

約数和(自身を含む): 55710720

約数和(自身を除く): 33949904

約数列:

[1, 2, 4, 7, 8, 11, 14, 16, 17, 22, 28, 34, 44, 56, 68, 77, 88, 112, 119, 136, 154, 176, 187, 238, 272, 308, 374, 476, 616, 748, 952, 1039, 1232, 1309, 1496, 1904, 2078, 2618, 2992, 4156, 5236, 7273, 8312, 10472, 11429, 14546, 16624, 17663, 20944, 22858, 29092, 35326, 45716, 58184, 70652, 80003, 91432, 116368, 123641, 141304, 160006, 182864, 194293, 247282, 282608, 320012, 388586, 494564, 640024, 777172, 989128, 1280048, 1360051, 1554344, 1978256, 2720102, 3108688, 5440204, 10880408, 21760816]

約数ペア:

[(1, 21760816), (2, 10880408), (4, 5440204), (7, 3108688), (8, 2720102), (11, 1978256), (14, 1554344), (16, 1360051), (17, 1280048), (22, 989128), (28, 777172), (34, 640024), (44, 494564), (56, 388586), (68, 320012), (77, 282608), (88, 247282), (112, 194293), (119, 182864), (136, 160006), (154, 141304), (176, 123641), (187, 116368), (238, 91432), (272, 80003), (308, 70652), (374, 58184), (476, 45716), (616, 35326), (748, 29092), (952, 22858), (1039, 20944), (1232, 17663), (1309, 16624), (1496, 14546), (1904, 11429), (2078, 10472), (2618, 8312), (2992, 7273), (4156, 5236)]