1388220

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{1361}}^1$

素因数の和:1390

約数の個数: 48

約数和(自身を含む): 4118688

約数和(自身を除く): 2730468

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 170, 204, 255, 340, 510, 1020, 1361, 2722, 4083, 5444, 6805, 8166, 13610, 16332, 20415, 23137, 27220, 40830, 46274, 69411, 81660, 92548, 115685, 138822, 231370, 277644, 347055, 462740, 694110, 1388220]

約数ペア:

[(1, 1388220), (2, 694110), (3, 462740), (4, 347055), (5, 277644), (6, 231370), (10, 138822), (12, 115685), (15, 92548), (17, 81660), (20, 69411), (30, 46274), (34, 40830), (51, 27220), (60, 23137), (68, 20415), (85, 16332), (102, 13610), (170, 8166), (204, 6805), (255, 5444), (340, 4083), (510, 2722), (1020, 1361)]