20780768

素因数分解:

$2^5\times {\mathrm{41}}^1\times {\mathrm{47}}^1\times {\mathrm{337}}^1$

素因数の和:435

約数の個数: 48

約数和(自身を含む): 42928704

約数和(自身を除く): 22147936

約数列:

[1, 2, 4, 8, 16, 32, 41, 47, 82, 94, 164, 188, 328, 337, 376, 656, 674, 752, 1312, 1348, 1504, 1927, 2696, 3854, 5392, 7708, 10784, 13817, 15416, 15839, 27634, 30832, 31678, 55268, 61664, 63356, 110536, 126712, 221072, 253424, 442144, 506848, 649399, 1298798, 2597596, 5195192, 10390384, 20780768]

約数ペア:

[(1, 20780768), (2, 10390384), (4, 5195192), (8, 2597596), (16, 1298798), (32, 649399), (41, 506848), (47, 442144), (82, 253424), (94, 221072), (164, 126712), (188, 110536), (328, 63356), (337, 61664), (376, 55268), (656, 31678), (674, 30832), (752, 27634), (1312, 15839), (1348, 15416), (1504, 13817), (1927, 10784), (2696, 7708), (3854, 5392)]