20218858

素因数分解:

$2^1\times {\mathrm{11}}^2\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1$

素因数の和:163

約数の個数: 48

約数和(自身を含む): 35814240

約数和(自身を除く): 15595382

約数列:

[1, 2, 11, 22, 29, 43, 58, 67, 86, 121, 134, 242, 319, 473, 638, 737, 946, 1247, 1474, 1943, 2494, 2881, 3509, 3886, 5203, 5762, 7018, 8107, 10406, 13717, 16214, 21373, 27434, 31691, 42746, 63382, 83549, 150887, 167098, 235103, 301774, 348601, 470206, 697202, 919039, 1838078, 10109429, 20218858]

約数ペア:

[(1, 20218858), (2, 10109429), (11, 1838078), (22, 919039), (29, 697202), (43, 470206), (58, 348601), (67, 301774), (86, 235103), (121, 167098), (134, 150887), (242, 83549), (319, 63382), (473, 42746), (638, 31691), (737, 27434), (946, 21373), (1247, 16214), (1474, 13717), (1943, 10406), (2494, 8107), (2881, 7018), (3509, 5762), (3886, 5203)]