21125742

素因数分解:

$2^1\times 3^1\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{41}}^1\times {\mathrm{211}}^1$

素因数の和:305

約数の個数: 64

約数和(自身を含む): 48722688

約数和(自身を除く): 27596946

約数列:

[1, 2, 3, 6, 11, 22, 33, 37, 41, 66, 74, 82, 111, 123, 211, 222, 246, 407, 422, 451, 633, 814, 902, 1221, 1266, 1353, 1517, 2321, 2442, 2706, 3034, 4551, 4642, 6963, 7807, 8651, 9102, 13926, 15614, 16687, 17302, 23421, 25953, 33374, 46842, 50061, 51906, 85877, 95161, 100122, 171754, 190322, 257631, 285483, 320087, 515262, 570966, 640174, 960261, 1920522, 3520957, 7041914, 10562871, 21125742]

約数ペア:

[(1, 21125742), (2, 10562871), (3, 7041914), (6, 3520957), (11, 1920522), (22, 960261), (33, 640174), (37, 570966), (41, 515262), (66, 320087), (74, 285483), (82, 257631), (111, 190322), (123, 171754), (211, 100122), (222, 95161), (246, 85877), (407, 51906), (422, 50061), (451, 46842), (633, 33374), (814, 25953), (902, 23421), (1221, 17302), (1266, 16687), (1353, 15614), (1517, 13926), (2321, 9102), (2442, 8651), (2706, 7807), (3034, 6963), (4551, 4642)]