20780050

素因数分解:

$2^1\times 5^2\times {\mathrm{67}}^1\times {\mathrm{6203}}^1$

素因数の和:6282

約数の個数: 24

約数和(自身を含む): 39234096

約数和(自身を除く): 18454046

約数列:

[1, 2, 5, 10, 25, 50, 67, 134, 335, 670, 1675, 3350, 6203, 12406, 31015, 62030, 155075, 310150, 415601, 831202, 2078005, 4156010, 10390025, 20780050]

約数ペア:

[(1, 20780050), (2, 10390025), (5, 4156010), (10, 2078005), (25, 831202), (50, 415601), (67, 310150), (134, 155075), (335, 62030), (670, 31015), (1675, 12406), (3350, 6203)]