289948520

素因数分解:

$2^3\times 5^1\times {\mathrm{97}}^1\times {\mathrm{74729}}^1$

素因数の和:74837

約数の個数: 32

約数和(自身を含む): 659118600

約数和(自身を除く): 369170080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 97, 194, 388, 485, 776, 970, 1940, 3880, 74729, 149458, 298916, 373645, 597832, 747290, 1494580, 2989160, 7248713, 14497426, 28994852, 36243565, 57989704, 72487130, 144974260, 289948520]

約数ペア:

[(1, 289948520), (2, 144974260), (4, 72487130), (5, 57989704), (8, 36243565), (10, 28994852), (20, 14497426), (40, 7248713), (97, 2989160), (194, 1494580), (388, 747290), (485, 597832), (776, 373645), (970, 298916), (1940, 149458), (3880, 74729)]