21478072

素因数分解:

$2^3\times 7^2\times {\mathrm{11}}^1\times {\mathrm{17}}^1\times {\mathrm{293}}^1$

素因数の和:341

約数の個数: 96

約数和(自身を含む): 54295920

約数和(自身を除く): 32817848

約数列:

[1, 2, 4, 7, 8, 11, 14, 17, 22, 28, 34, 44, 49, 56, 68, 77, 88, 98, 119, 136, 154, 187, 196, 238, 293, 308, 374, 392, 476, 539, 586, 616, 748, 833, 952, 1078, 1172, 1309, 1496, 1666, 2051, 2156, 2344, 2618, 3223, 3332, 4102, 4312, 4981, 5236, 6446, 6664, 8204, 9163, 9962, 10472, 12892, 14357, 16408, 18326, 19924, 22561, 25784, 28714, 34867, 36652, 39848, 45122, 54791, 57428, 69734, 73304, 90244, 109582, 114856, 139468, 157927, 180488, 219164, 244069, 278936, 315854, 383537, 438328, 488138, 631708, 767074, 976276, 1263416, 1534148, 1952552, 2684759, 3068296, 5369518, 10739036, 21478072]

約数ペア:

[(1, 21478072), (2, 10739036), (4, 5369518), (7, 3068296), (8, 2684759), (11, 1952552), (14, 1534148), (17, 1263416), (22, 976276), (28, 767074), (34, 631708), (44, 488138), (49, 438328), (56, 383537), (68, 315854), (77, 278936), (88, 244069), (98, 219164), (119, 180488), (136, 157927), (154, 139468), (187, 114856), (196, 109582), (238, 90244), (293, 73304), (308, 69734), (374, 57428), (392, 54791), (476, 45122), (539, 39848), (586, 36652), (616, 34867), (748, 28714), (833, 25784), (952, 22561), (1078, 19924), (1172, 18326), (1309, 16408), (1496, 14357), (1666, 12892), (2051, 10472), (2156, 9962), (2344, 9163), (2618, 8204), (3223, 6664), (3332, 6446), (4102, 5236), (4312, 4981)]