19715805

素因数分解:

$3^8\times 5^1\times {\mathrm{601}}^1$

素因数の和:630

約数の個数: 36

約数和(自身を含む): 35545692

約数和(自身を除く): 15829887

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 135, 243, 405, 601, 729, 1215, 1803, 2187, 3005, 3645, 5409, 6561, 9015, 10935, 16227, 27045, 32805, 48681, 81135, 146043, 243405, 438129, 730215, 1314387, 2190645, 3943161, 6571935, 19715805]

約数ペア:

[(1, 19715805), (3, 6571935), (5, 3943161), (9, 2190645), (15, 1314387), (27, 730215), (45, 438129), (81, 243405), (135, 146043), (243, 81135), (405, 48681), (601, 32805), (729, 27045), (1215, 16227), (1803, 10935), (2187, 9015), (3005, 6561), (3645, 5409)]