21078543

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{31}}^1\times {\mathrm{79}}^1\times {\mathrm{151}}^1$

素因数の和:283

約数の個数: 32

約数和(自身を含む): 31129600

約数和(自身を除く): 10051057

約数列:

[1, 3, 19, 31, 57, 79, 93, 151, 237, 453, 589, 1501, 1767, 2449, 2869, 4503, 4681, 7347, 8607, 11929, 14043, 35787, 46531, 88939, 139593, 226651, 266817, 369799, 679953, 1109397, 7026181, 21078543]

約数ペア:

[(1, 21078543), (3, 7026181), (19, 1109397), (31, 679953), (57, 369799), (79, 266817), (93, 226651), (151, 139593), (237, 88939), (453, 46531), (589, 35787), (1501, 14043), (1767, 11929), (2449, 8607), (2869, 7347), (4503, 4681)]