28080420

素因数分解:

$2^2\times 3^1\times 5^1\times {\mathrm{31}}^2\times {\mathrm{487}}^1$

素因数の和:561

約数の個数: 72

約数和(自身を含む): 81410112

約数和(自身を除く): 53329692

約数列:

[1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 31, 60, 62, 93, 124, 155, 186, 310, 372, 465, 487, 620, 930, 961, 974, 1461, 1860, 1922, 1948, 2435, 2883, 2922, 3844, 4805, 4870, 5766, 5844, 7305, 9610, 9740, 11532, 14415, 14610, 15097, 19220, 28830, 29220, 30194, 45291, 57660, 60388, 75485, 90582, 150970, 181164, 226455, 301940, 452910, 468007, 905820, 936014, 1404021, 1872028, 2340035, 2808042, 4680070, 5616084, 7020105, 9360140, 14040210, 28080420]

約数ペア:

[(1, 28080420), (2, 14040210), (3, 9360140), (4, 7020105), (5, 5616084), (6, 4680070), (10, 2808042), (12, 2340035), (15, 1872028), (20, 1404021), (30, 936014), (31, 905820), (60, 468007), (62, 452910), (93, 301940), (124, 226455), (155, 181164), (186, 150970), (310, 90582), (372, 75485), (465, 60388), (487, 57660), (620, 45291), (930, 30194), (961, 29220), (974, 28830), (1461, 19220), (1860, 15097), (1922, 14610), (1948, 14415), (2435, 11532), (2883, 9740), (2922, 9610), (3844, 7305), (4805, 5844), (4870, 5766)]