28140406

素因数分解:

$2^1\times 7^3\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{127}}^1$

素因数の和:186

約数の個数: 64

約数和(自身を含む): 55296000

約数和(自身を除く): 27155594

約数列:

[1, 2, 7, 14, 17, 19, 34, 38, 49, 98, 119, 127, 133, 238, 254, 266, 323, 343, 646, 686, 833, 889, 931, 1666, 1778, 1862, 2159, 2261, 2413, 4318, 4522, 4826, 5831, 6223, 6517, 11662, 12446, 13034, 15113, 15827, 16891, 30226, 31654, 33782, 41021, 43561, 82042, 87122, 105791, 110789, 118237, 211582, 221578, 236474, 287147, 574294, 740537, 827659, 1481074, 1655318, 2010029, 4020058, 14070203, 28140406]

約数ペア:

[(1, 28140406), (2, 14070203), (7, 4020058), (14, 2010029), (17, 1655318), (19, 1481074), (34, 827659), (38, 740537), (49, 574294), (98, 287147), (119, 236474), (127, 221578), (133, 211582), (238, 118237), (254, 110789), (266, 105791), (323, 87122), (343, 82042), (646, 43561), (686, 41021), (833, 33782), (889, 31654), (931, 30226), (1666, 16891), (1778, 15827), (1862, 15113), (2159, 13034), (2261, 12446), (2413, 11662), (4318, 6517), (4522, 6223), (4826, 5831)]