165161720

素因数分解:

$2^3\times 5^1\times {\mathrm{137}}^1\times {\mathrm{30139}}^1$

素因数の和:30287

約数の個数: 32

約数和(自身を含む): 374338800

約数和(自身を除く): 209177080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 137, 274, 548, 685, 1096, 1370, 2740, 5480, 30139, 60278, 120556, 150695, 241112, 301390, 602780, 1205560, 4129043, 8258086, 16516172, 20645215, 33032344, 41290430, 82580860, 165161720]

約数ペア:

[(1, 165161720), (2, 82580860), (4, 41290430), (5, 33032344), (8, 20645215), (10, 16516172), (20, 8258086), (40, 4129043), (137, 1205560), (274, 602780), (548, 301390), (685, 241112), (1096, 150695), (1370, 120556), (2740, 60278), (5480, 30139)]