12790420

素因数分解:

$2^2\times 5^1\times {\mathrm{19}}^1\times {\mathrm{97}}^1\times {\mathrm{347}}^1$

素因数の和:472

約数の個数: 48

約数和(自身を含む): 28647360

約数和(自身を除く): 15856940

約数列:

[1, 2, 4, 5, 10, 19, 20, 38, 76, 95, 97, 190, 194, 347, 380, 388, 485, 694, 970, 1388, 1735, 1843, 1940, 3470, 3686, 6593, 6940, 7372, 9215, 13186, 18430, 26372, 32965, 33659, 36860, 65930, 67318, 131860, 134636, 168295, 336590, 639521, 673180, 1279042, 2558084, 3197605, 6395210, 12790420]

約数ペア:

[(1, 12790420), (2, 6395210), (4, 3197605), (5, 2558084), (10, 1279042), (19, 673180), (20, 639521), (38, 336590), (76, 168295), (95, 134636), (97, 131860), (190, 67318), (194, 65930), (347, 36860), (380, 33659), (388, 32965), (485, 26372), (694, 18430), (970, 13186), (1388, 9215), (1735, 7372), (1843, 6940), (1940, 6593), (3470, 3686)]