1521167720

素因数分解:

$2^3\times 5^1\times {\mathrm{1987}}^1\times {\mathrm{19139}}^1$

素因数の和:21137

約数の個数: 32

約数和(自身を含む): 3424528800

約数和(自身を除く): 1903361080

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 1987, 3974, 7948, 9935, 15896, 19139, 19870, 38278, 39740, 76556, 79480, 95695, 153112, 191390, 382780, 765560, 38029193, 76058386, 152116772, 190145965, 304233544, 380291930, 760583860, 1521167720]

約数ペア:

[(1, 1521167720), (2, 760583860), (4, 380291930), (5, 304233544), (8, 190145965), (10, 152116772), (20, 76058386), (40, 38029193), (1987, 765560), (3974, 382780), (7948, 191390), (9935, 153112), (15896, 95695), (19139, 79480), (19870, 76556), (38278, 39740)]