21978476

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{5953}}^1$

素因数の和:6041

約数の個数: 24

約数和(自身を含む): 42011424

約数和(自身を除く): 20032948

約数列:

[1, 2, 4, 13, 26, 52, 71, 142, 284, 923, 1846, 3692, 5953, 11906, 23812, 77389, 154778, 309556, 422663, 845326, 1690652, 5494619, 10989238, 21978476]

約数ペア:

[(1, 21978476), (2, 10989238), (4, 5494619), (13, 1690652), (26, 845326), (52, 422663), (71, 309556), (142, 154778), (284, 77389), (923, 23812), (1846, 11906), (3692, 5953)]