201505720

素因数分解:

$2^3\times 5^1\times {\mathrm{13}}^1\times {\mathrm{479}}^1\times {\mathrm{809}}^1$

素因数の和:1312

約数の個数: 64

約数和(自身を含む): 489888000

約数和(自身を除く): 288382280

約数列:

[1, 2, 4, 5, 8, 10, 13, 20, 26, 40, 52, 65, 104, 130, 260, 479, 520, 809, 958, 1618, 1916, 2395, 3236, 3832, 4045, 4790, 6227, 6472, 8090, 9580, 10517, 12454, 16180, 19160, 21034, 24908, 31135, 32360, 42068, 49816, 52585, 62270, 84136, 105170, 124540, 210340, 249080, 387511, 420680, 775022, 1550044, 1937555, 3100088, 3875110, 5037643, 7750220, 10075286, 15500440, 20150572, 25188215, 40301144, 50376430, 100752860, 201505720]

約数ペア:

[(1, 201505720), (2, 100752860), (4, 50376430), (5, 40301144), (8, 25188215), (10, 20150572), (13, 15500440), (20, 10075286), (26, 7750220), (40, 5037643), (52, 3875110), (65, 3100088), (104, 1937555), (130, 1550044), (260, 775022), (479, 420680), (520, 387511), (809, 249080), (958, 210340), (1618, 124540), (1916, 105170), (2395, 84136), (3236, 62270), (3832, 52585), (4045, 49816), (4790, 42068), (6227, 32360), (6472, 31135), (8090, 24908), (9580, 21034), (10517, 19160), (12454, 16180)]