19874021688

素因数分解:

$2^3\times 3^2\times {\mathrm{1987}}^1\times {\mathrm{138917}}^1$

素因数の和:140916

約数の個数: 48

約数和(自身を含む): 53852951880

約数和(自身を除く): 33978930192

約数列:

[1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 1987, 3974, 5961, 7948, 11922, 15896, 17883, 23844, 35766, 47688, 71532, 138917, 143064, 277834, 416751, 555668, 833502, 1111336, 1250253, 1667004, 2500506, 3334008, 5001012, 10002024, 276028079, 552056158, 828084237, 1104112316, 1656168474, 2208224632, 2484252711, 3312336948, 4968505422, 6624673896, 9937010844, 19874021688]

約数ペア:

[(1, 19874021688), (2, 9937010844), (3, 6624673896), (4, 4968505422), (6, 3312336948), (8, 2484252711), (9, 2208224632), (12, 1656168474), (18, 1104112316), (24, 828084237), (36, 552056158), (72, 276028079), (1987, 10002024), (3974, 5001012), (5961, 3334008), (7948, 2500506), (11922, 1667004), (15896, 1250253), (17883, 1111336), (23844, 833502), (35766, 555668), (47688, 416751), (71532, 277834), (138917, 143064)]