21090798988

素因数分解:

$2^2\times 7^1\times {\mathrm{19}}^1\times {\mathrm{47}}^1\times {\mathrm{843497}}^1$

素因数の和:843574

約数の個数: 48

約数和(自身を含む): 45346452480

約数和(自身を除く): 24255653492

約数列:

[1, 2, 4, 7, 14, 19, 28, 38, 47, 76, 94, 133, 188, 266, 329, 532, 658, 893, 1316, 1786, 3572, 6251, 12502, 25004, 843497, 1686994, 3373988, 5904479, 11808958, 16026443, 23617916, 32052886, 39644359, 64105772, 79288718, 112185101, 158577436, 224370202, 277510513, 448740404, 555021026, 753242821, 1110042052, 1506485642, 3012971284, 5272699747, 10545399494, 21090798988]

約数ペア:

[(1, 21090798988), (2, 10545399494), (4, 5272699747), (7, 3012971284), (14, 1506485642), (19, 1110042052), (28, 753242821), (38, 555021026), (47, 448740404), (76, 277510513), (94, 224370202), (133, 158577436), (188, 112185101), (266, 79288718), (329, 64105772), (532, 39644359), (658, 32052886), (893, 23617916), (1316, 16026443), (1786, 11808958), (3572, 5904479), (6251, 3373988), (12502, 1686994), (25004, 843497)]