28351988

素因数分解:

$2^2\times 7^2\times {\mathrm{17}}^1\times {\mathrm{67}}^1\times {\mathrm{127}}^1$

素因数の和:229

約数の個数: 72

約数和(自身を含む): 62512128

約数和(自身を除く): 34160140

約数列:

[1, 2, 4, 7, 14, 17, 28, 34, 49, 67, 68, 98, 119, 127, 134, 196, 238, 254, 268, 469, 476, 508, 833, 889, 938, 1139, 1666, 1778, 1876, 2159, 2278, 3283, 3332, 3556, 4318, 4556, 6223, 6566, 7973, 8509, 8636, 12446, 13132, 15113, 15946, 17018, 24892, 30226, 31892, 34036, 55811, 59563, 60452, 105791, 111622, 119126, 144653, 211582, 223244, 238252, 289306, 416941, 423164, 578612, 833882, 1012571, 1667764, 2025142, 4050284, 7087997, 14175994, 28351988]

約数ペア:

[(1, 28351988), (2, 14175994), (4, 7087997), (7, 4050284), (14, 2025142), (17, 1667764), (28, 1012571), (34, 833882), (49, 578612), (67, 423164), (68, 416941), (98, 289306), (119, 238252), (127, 223244), (134, 211582), (196, 144653), (238, 119126), (254, 111622), (268, 105791), (469, 60452), (476, 59563), (508, 55811), (833, 34036), (889, 31892), (938, 30226), (1139, 24892), (1666, 17018), (1778, 15946), (1876, 15113), (2159, 13132), (2278, 12446), (3283, 8636), (3332, 8509), (3556, 7973), (4318, 6566), (4556, 6223)]