25781940

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{3331}}^1$

素因数の和:3389

約数の個数: 72

約数和(自身を含む): 80047968

約数和(自身を除く): 54266028

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 43, 45, 60, 86, 90, 129, 172, 180, 215, 258, 387, 430, 516, 645, 774, 860, 1290, 1548, 1935, 2580, 3331, 3870, 6662, 7740, 9993, 13324, 16655, 19986, 29979, 33310, 39972, 49965, 59958, 66620, 99930, 119916, 143233, 149895, 199860, 286466, 299790, 429699, 572932, 599580, 716165, 859398, 1289097, 1432330, 1718796, 2148495, 2578194, 2864660, 4296990, 5156388, 6445485, 8593980, 12890970, 25781940]

約数ペア:

[(1, 25781940), (2, 12890970), (3, 8593980), (4, 6445485), (5, 5156388), (6, 4296990), (9, 2864660), (10, 2578194), (12, 2148495), (15, 1718796), (18, 1432330), (20, 1289097), (30, 859398), (36, 716165), (43, 599580), (45, 572932), (60, 429699), (86, 299790), (90, 286466), (129, 199860), (172, 149895), (180, 143233), (215, 119916), (258, 99930), (387, 66620), (430, 59958), (516, 49965), (645, 39972), (774, 33310), (860, 29979), (1290, 19986), (1548, 16655), (1935, 13324), (2580, 9993), (3331, 7740), (3870, 6662)]