1221249280

素因数分解:

$2^8\times 5^1\times {\mathrm{61}}^1\times {\mathrm{15641}}^1$

素因数の和:15723

約数の個数: 72

約数和(自身を含む): 2973419064

約数和(自身を除く): 1752169784

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 61, 64, 80, 122, 128, 160, 244, 256, 305, 320, 488, 610, 640, 976, 1220, 1280, 1952, 2440, 3904, 4880, 7808, 9760, 15616, 15641, 19520, 31282, 39040, 62564, 78080, 78205, 125128, 156410, 250256, 312820, 500512, 625640, 954101, 1001024, 1251280, 1908202, 2002048, 2502560, 3816404, 4004096, 4770505, 5005120, 7632808, 9541010, 10010240, 15265616, 19082020, 20020480, 30531232, 38164040, 61062464, 76328080, 122124928, 152656160, 244249856, 305312320, 610624640, 1221249280]

約数ペア:

[(1, 1221249280), (2, 610624640), (4, 305312320), (5, 244249856), (8, 152656160), (10, 122124928), (16, 76328080), (20, 61062464), (32, 38164040), (40, 30531232), (61, 20020480), (64, 19082020), (80, 15265616), (122, 10010240), (128, 9541010), (160, 7632808), (244, 5005120), (256, 4770505), (305, 4004096), (320, 3816404), (488, 2502560), (610, 2002048), (640, 1908202), (976, 1251280), (1220, 1001024), (1280, 954101), (1952, 625640), (2440, 500512), (3904, 312820), (4880, 250256), (7808, 156410), (9760, 125128), (15616, 78205), (15641, 78080), (19520, 62564), (31282, 39040)]