15420680

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1\times {\mathrm{347}}^1$

素因数の和:470

約数の個数: 64

約数和(自身を含む): 38335680

約数和(自身を除く): 22915000

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 101, 110, 202, 220, 347, 404, 440, 505, 694, 808, 1010, 1111, 1388, 1735, 2020, 2222, 2776, 3470, 3817, 4040, 4444, 5555, 6940, 7634, 8888, 11110, 13880, 15268, 19085, 22220, 30536, 35047, 38170, 44440, 70094, 76340, 140188, 152680, 175235, 280376, 350470, 385517, 700940, 771034, 1401880, 1542068, 1927585, 3084136, 3855170, 7710340, 15420680]

約数ペア:

[(1, 15420680), (2, 7710340), (4, 3855170), (5, 3084136), (8, 1927585), (10, 1542068), (11, 1401880), (20, 771034), (22, 700940), (40, 385517), (44, 350470), (55, 280376), (88, 175235), (101, 152680), (110, 140188), (202, 76340), (220, 70094), (347, 44440), (404, 38170), (440, 35047), (505, 30536), (694, 22220), (808, 19085), (1010, 15268), (1111, 13880), (1388, 11110), (1735, 8888), (2020, 7634), (2222, 6940), (2776, 5555), (3470, 4444), (3817, 4040)]