81535815

素因数分解:

$3^4\times 5^1\times {\mathrm{109}}^1\times {\mathrm{1847}}^1$

素因数の和:1973

約数の個数: 40

約数和(自身を含む): 147581280

約数和(自身を除く): 66045465

約数列:

[1, 3, 5, 9, 15, 27, 45, 81, 109, 135, 327, 405, 545, 981, 1635, 1847, 2943, 4905, 5541, 8829, 9235, 14715, 16623, 27705, 44145, 49869, 83115, 149607, 201323, 249345, 603969, 748035, 1006615, 1811907, 3019845, 5435721, 9059535, 16307163, 27178605, 81535815]

約数ペア:

[(1, 81535815), (3, 27178605), (5, 16307163), (9, 9059535), (15, 5435721), (27, 3019845), (45, 1811907), (81, 1006615), (109, 748035), (135, 603969), (327, 249345), (405, 201323), (545, 149607), (981, 83115), (1635, 49869), (1847, 44145), (2943, 27705), (4905, 16623), (5541, 14715), (8829, 9235)]