218876620

素因数分解:

$2^2\times 5^1\times {\mathrm{97}}^1\times {\mathrm{257}}^1\times {\mathrm{439}}^1$

素因数の和:802

約数の個数: 48

約数和(自身を含む): 467248320

約数和(自身を除く): 248371700

約数列:

[1, 2, 4, 5, 10, 20, 97, 194, 257, 388, 439, 485, 514, 878, 970, 1028, 1285, 1756, 1940, 2195, 2570, 4390, 5140, 8780, 24929, 42583, 49858, 85166, 99716, 112823, 124645, 170332, 212915, 225646, 249290, 425830, 451292, 498580, 564115, 851660, 1128230, 2256460, 10943831, 21887662, 43775324, 54719155, 109438310, 218876620]

約数ペア:

[(1, 218876620), (2, 109438310), (4, 54719155), (5, 43775324), (10, 21887662), (20, 10943831), (97, 2256460), (194, 1128230), (257, 851660), (388, 564115), (439, 498580), (485, 451292), (514, 425830), (878, 249290), (970, 225646), (1028, 212915), (1285, 170332), (1756, 124645), (1940, 112823), (2195, 99716), (2570, 85166), (4390, 49858), (5140, 42583), (8780, 24929)]