68370640

素因数分解:

$2^4\times 5^1\times {\mathrm{13}}^3\times {\mathrm{389}}^1$

素因数の和:441

約数の個数: 80

約数和(自身を含む): 172645200

約数和(自身を除く): 104274560

約数列:

[1, 2, 4, 5, 8, 10, 13, 16, 20, 26, 40, 52, 65, 80, 104, 130, 169, 208, 260, 338, 389, 520, 676, 778, 845, 1040, 1352, 1556, 1690, 1945, 2197, 2704, 3112, 3380, 3890, 4394, 5057, 6224, 6760, 7780, 8788, 10114, 10985, 13520, 15560, 17576, 20228, 21970, 25285, 31120, 35152, 40456, 43940, 50570, 65741, 80912, 87880, 101140, 131482, 175760, 202280, 262964, 328705, 404560, 525928, 657410, 854633, 1051856, 1314820, 1709266, 2629640, 3418532, 4273165, 5259280, 6837064, 8546330, 13674128, 17092660, 34185320, 68370640]

約数ペア:

[(1, 68370640), (2, 34185320), (4, 17092660), (5, 13674128), (8, 8546330), (10, 6837064), (13, 5259280), (16, 4273165), (20, 3418532), (26, 2629640), (40, 1709266), (52, 1314820), (65, 1051856), (80, 854633), (104, 657410), (130, 525928), (169, 404560), (208, 328705), (260, 262964), (338, 202280), (389, 175760), (520, 131482), (676, 101140), (778, 87880), (845, 80912), (1040, 65741), (1352, 50570), (1556, 43940), (1690, 40456), (1945, 35152), (2197, 31120), (2704, 25285), (3112, 21970), (3380, 20228), (3890, 17576), (4394, 15560), (5057, 13520), (6224, 10985), (6760, 10114), (7780, 8788)]