21360645

素因数分解:

$3^3\times 5^1\times {\mathrm{158227}}^1$

素因数の和:158241

約数の個数: 16

約数和(自身を含む): 37974720

約数和(自身を除く): 16614075

約数列:

[1, 3, 5, 9, 15, 27, 45, 135, 158227, 474681, 791135, 1424043, 2373405, 4272129, 7120215, 21360645]

約数ペア:

[(1, 21360645), (3, 7120215), (5, 4272129), (9, 2373405), (15, 1424043), (27, 791135), (45, 474681), (135, 158227)]