20123852

素因数分解:

$2^2\times 7^1\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{631}}^1$

素因数の和:726

約数の個数: 48

約数和(自身を含む): 43319808

約数和(自身を除く): 23195956

約数列:

[1, 2, 4, 7, 14, 17, 28, 34, 67, 68, 119, 134, 238, 268, 469, 476, 631, 938, 1139, 1262, 1876, 2278, 2524, 4417, 4556, 7973, 8834, 10727, 15946, 17668, 21454, 31892, 42277, 42908, 75089, 84554, 150178, 169108, 295939, 300356, 591878, 718709, 1183756, 1437418, 2874836, 5030963, 10061926, 20123852]

約数ペア:

[(1, 20123852), (2, 10061926), (4, 5030963), (7, 2874836), (14, 1437418), (17, 1183756), (28, 718709), (34, 591878), (67, 300356), (68, 295939), (119, 169108), (134, 150178), (238, 84554), (268, 75089), (469, 42908), (476, 42277), (631, 31892), (938, 21454), (1139, 17668), (1262, 15946), (1876, 10727), (2278, 8834), (2524, 7973), (4417, 4556)]