21806580

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{21379}}^1$

素因数の和:21408

約数の個数: 48

約数和(自身を含む): 64653120

約数和(自身を除く): 42846540

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, 21379, 42758, 64137, 85516, 106895, 128274, 213790, 256548, 320685, 363443, 427580, 641370, 726886, 1090329, 1282740, 1453772, 1817215, 2180658, 3634430, 4361316, 5451645, 7268860, 10903290, 21806580]

約数ペア:

[(1, 21806580), (2, 10903290), (3, 7268860), (4, 5451645), (5, 4361316), (6, 3634430), (10, 2180658), (12, 1817215), (15, 1453772), (17, 1282740), (20, 1090329), (30, 726886), (34, 641370), (51, 427580), (60, 363443), (68, 320685), (85, 256548), (102, 213790), (170, 128274), (204, 106895), (255, 85516), (340, 64137), (510, 42758), (1020, 21379)]