28729980

素因数分解:

$2^2\times 3^2\times 5^1\times {\mathrm{193}}^1\times {\mathrm{827}}^1$

素因数の和:1035

約数の個数: 72

約数和(自身を含む): 87705072

約数和(自身を除く): 58975092

約数列:

[1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 193, 386, 579, 772, 827, 965, 1158, 1654, 1737, 1930, 2316, 2481, 2895, 3308, 3474, 3860, 4135, 4962, 5790, 6948, 7443, 8270, 8685, 9924, 11580, 12405, 14886, 16540, 17370, 24810, 29772, 34740, 37215, 49620, 74430, 148860, 159611, 319222, 478833, 638444, 798055, 957666, 1436499, 1596110, 1915332, 2394165, 2872998, 3192220, 4788330, 5745996, 7182495, 9576660, 14364990, 28729980]

約数ペア:

[(1, 28729980), (2, 14364990), (3, 9576660), (4, 7182495), (5, 5745996), (6, 4788330), (9, 3192220), (10, 2872998), (12, 2394165), (15, 1915332), (18, 1596110), (20, 1436499), (30, 957666), (36, 798055), (45, 638444), (60, 478833), (90, 319222), (180, 159611), (193, 148860), (386, 74430), (579, 49620), (772, 37215), (827, 34740), (965, 29772), (1158, 24810), (1654, 17370), (1737, 16540), (1930, 14886), (2316, 12405), (2481, 11580), (2895, 9924), (3308, 8685), (3474, 8270), (3860, 7443), (4135, 6948), (4962, 5790)]