220004478

素因数分解:

$2^1\times 3^3\times {\mathrm{197}}^1\times {\mathrm{20681}}^1$

素因数の和:20889

約数の個数: 32

約数和(自身を含む): 491404320

約数和(自身を除く): 271399842

約数列:

[1, 2, 3, 6, 9, 18, 27, 54, 197, 394, 591, 1182, 1773, 3546, 5319, 10638, 20681, 41362, 62043, 124086, 186129, 372258, 558387, 1116774, 4074157, 8148314, 12222471, 24444942, 36667413, 73334826, 110002239, 220004478]

約数ペア:

[(1, 220004478), (2, 110002239), (3, 73334826), (6, 36667413), (9, 24444942), (18, 12222471), (27, 8148314), (54, 4074157), (197, 1116774), (394, 558387), (591, 372258), (1182, 186129), (1773, 124086), (3546, 62043), (5319, 41362), (10638, 20681)]