20815140

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{17}}^1\times {\mathrm{20407}}^1$

素因数の和:20436

約数の個数: 48

約数和(自身を含む): 61713792

約数和(自身を除く): 40898652

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, 20407, 40814, 61221, 81628, 102035, 122442, 204070, 244884, 306105, 346919, 408140, 612210, 693838, 1040757, 1224420, 1387676, 1734595, 2081514, 3469190, 4163028, 5203785, 6938380, 10407570, 20815140]

約数ペア:

[(1, 20815140), (2, 10407570), (3, 6938380), (4, 5203785), (5, 4163028), (6, 3469190), (10, 2081514), (12, 1734595), (15, 1387676), (17, 1224420), (20, 1040757), (30, 693838), (34, 612210), (51, 408140), (60, 346919), (68, 306105), (85, 244884), (102, 204070), (170, 122442), (204, 102035), (255, 81628), (340, 61221), (510, 40814), (1020, 20407)]