20406960280

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{809}}^1\times {\mathrm{90089}}^1$

素因数の和:90916

約数の個数: 64

約数和(自身を含む): 52540488000

約数和(自身を除く): 32133527720

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 809, 1618, 3236, 4045, 5663, 6472, 8090, 11326, 16180, 22652, 28315, 32360, 45304, 56630, 90089, 113260, 180178, 226520, 360356, 450445, 630623, 720712, 900890, 1261246, 1801780, 2522492, 3153115, 3603560, 5044984, 6306230, 12612460, 25224920, 72882001, 145764002, 291528004, 364410005, 510174007, 583056008, 728820010, 1020348014, 1457640020, 2040696028, 2550870035, 2915280040, 4081392056, 5101740070, 10203480140, 20406960280]

約数ペア:

[(1, 20406960280), (2, 10203480140), (4, 5101740070), (5, 4081392056), (7, 2915280040), (8, 2550870035), (10, 2040696028), (14, 1457640020), (20, 1020348014), (28, 728820010), (35, 583056008), (40, 510174007), (56, 364410005), (70, 291528004), (140, 145764002), (280, 72882001), (809, 25224920), (1618, 12612460), (3236, 6306230), (4045, 5044984), (5663, 3603560), (6472, 3153115), (8090, 2522492), (11326, 1801780), (16180, 1261246), (22652, 900890), (28315, 720712), (32360, 630623), (45304, 450445), (56630, 360356), (90089, 226520), (113260, 180178)]