303972380

素因数分解:

$2^2\times 5^1\times {\mathrm{89}}^1\times {\mathrm{389}}^1\times {\mathrm{439}}^1$

素因数の和:926

約数の個数: 48

約数和(自身を含む): 648648000

約数和(自身を除く): 344675620

約数列:

[1, 2, 4, 5, 10, 20, 89, 178, 356, 389, 439, 445, 778, 878, 890, 1556, 1756, 1780, 1945, 2195, 3890, 4390, 7780, 8780, 34621, 39071, 69242, 78142, 138484, 156284, 170771, 173105, 195355, 341542, 346210, 390710, 683084, 692420, 781420, 853855, 1707710, 3415420, 15198619, 30397238, 60794476, 75993095, 151986190, 303972380]

約数ペア:

[(1, 303972380), (2, 151986190), (4, 75993095), (5, 60794476), (10, 30397238), (20, 15198619), (89, 3415420), (178, 1707710), (356, 853855), (389, 781420), (439, 692420), (445, 683084), (778, 390710), (878, 346210), (890, 341542), (1556, 195355), (1756, 173105), (1780, 170771), (1945, 156284), (2195, 138484), (3890, 78142), (4390, 69242), (7780, 39071), (8780, 34621)]