128885820

素因数分解:

$2^2\times 3^1\times 5^1\times 7^1\times {\mathrm{306871}}^1$

素因数の和:306890

約数の個数: 48

約数和(自身を含む): 412435968

約数和(自身を除く): 283550148

約数列:

[1, 2, 3, 4, 5, 6, 7, 10, 12, 14, 15, 20, 21, 28, 30, 35, 42, 60, 70, 84, 105, 140, 210, 420, 306871, 613742, 920613, 1227484, 1534355, 1841226, 2148097, 3068710, 3682452, 4296194, 4603065, 6137420, 6444291, 8592388, 9206130, 10740485, 12888582, 18412260, 21480970, 25777164, 32221455, 42961940, 64442910, 128885820]

約数ペア:

[(1, 128885820), (2, 64442910), (3, 42961940), (4, 32221455), (5, 25777164), (6, 21480970), (7, 18412260), (10, 12888582), (12, 10740485), (14, 9206130), (15, 8592388), (20, 6444291), (21, 6137420), (28, 4603065), (30, 4296194), (35, 3682452), (42, 3068710), (60, 2148097), (70, 1841226), (84, 1534355), (105, 1227484), (140, 920613), (210, 613742), (420, 306871)]