21730756

素因数分解:

$2^2\times {\mathrm{19}}^2\times {\mathrm{101}}^1\times {\mathrm{149}}^1$

素因数の和:292

約数の個数: 36

約数和(自身を含む): 40805100

約数和(自身を除く): 19074344

約数列:

[1, 2, 4, 19, 38, 76, 101, 149, 202, 298, 361, 404, 596, 722, 1444, 1919, 2831, 3838, 5662, 7676, 11324, 15049, 30098, 36461, 53789, 60196, 72922, 107578, 145844, 215156, 285931, 571862, 1143724, 5432689, 10865378, 21730756]

約数ペア:

[(1, 21730756), (2, 10865378), (4, 5432689), (19, 1143724), (38, 571862), (76, 285931), (101, 215156), (149, 145844), (202, 107578), (298, 72922), (361, 60196), (404, 53789), (596, 36461), (722, 30098), (1444, 15049), (1919, 11324), (2831, 7676), (3838, 5662)]