18916821

素因数分解:

$3^6\times 7^1\times {\mathrm{11}}^1\times {\mathrm{337}}^1$

素因数の和:373

約数の個数: 56

約数和(自身を含む): 35465664

約数和(自身を除く): 16548843

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 63, 77, 81, 99, 189, 231, 243, 297, 337, 567, 693, 729, 891, 1011, 1701, 2079, 2359, 2673, 3033, 3707, 5103, 6237, 7077, 8019, 9099, 11121, 18711, 21231, 25949, 27297, 33363, 56133, 63693, 77847, 81891, 100089, 191079, 233541, 245673, 300267, 573237, 700623, 900801, 1719711, 2101869, 2702403, 6305607, 18916821]

約数ペア:

[(1, 18916821), (3, 6305607), (7, 2702403), (9, 2101869), (11, 1719711), (21, 900801), (27, 700623), (33, 573237), (63, 300267), (77, 245673), (81, 233541), (99, 191079), (189, 100089), (231, 81891), (243, 77847), (297, 63693), (337, 56133), (567, 33363), (693, 27297), (729, 25949), (891, 21231), (1011, 18711), (1701, 11121), (2079, 9099), (2359, 8019), (2673, 7077), (3033, 6237), (3707, 5103)]