19811756

素因数分解:

$2^2\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{89}}^1\times {\mathrm{101}}^1$

素因数の和:242

約数の個数: 48

約数和(自身を含む): 38556000

約数和(自身を除く): 18744244

約数列:

[1, 2, 4, 19, 29, 38, 58, 76, 89, 101, 116, 178, 202, 356, 404, 551, 1102, 1691, 1919, 2204, 2581, 2929, 3382, 3838, 5162, 5858, 6764, 7676, 8989, 10324, 11716, 17978, 35956, 49039, 55651, 98078, 111302, 170791, 196156, 222604, 260681, 341582, 521362, 683164, 1042724, 4952939, 9905878, 19811756]

約数ペア:

[(1, 19811756), (2, 9905878), (4, 4952939), (19, 1042724), (29, 683164), (38, 521362), (58, 341582), (76, 260681), (89, 222604), (101, 196156), (116, 170791), (178, 111302), (202, 98078), (356, 55651), (404, 49039), (551, 35956), (1102, 17978), (1691, 11716), (1919, 10324), (2204, 8989), (2581, 7676), (2929, 6764), (3382, 5858), (3838, 5162)]